1 00:00:02,000 --> 00:00:07,000 Downloaded from YTS.MX 2 00:00:08,000 --> 00:00:13,000 Official YIFY movies site: YTS.MX 3 00:00:15,709 --> 00:00:19,875 [narrator] It's painfully clear that our obsession with sharks has sometimes 4 00:00:19,959 --> 00:00:21,959 come at a deadly cost. 5 00:00:24,333 --> 00:00:26,542 But one man has devoted his life 6 00:00:26,625 --> 00:00:30,709 to narrowing the barrier between man and shark. 7 00:00:30,792 --> 00:00:33,041 Shark suits are not for the days that things go well, 8 00:00:33,125 --> 00:00:35,125 it's for the days that things go wrong. 9 00:00:35,208 --> 00:00:37,208 [narrator] By creating new technology 10 00:00:37,291 --> 00:00:40,667 that allows shark researchers to leave the cage, 11 00:00:40,750 --> 00:00:42,875 and live to tell about it. 12 00:00:42,959 --> 00:00:44,500 [Jeremiah] Wow! 13 00:00:44,583 --> 00:00:48,458 [narrator] Now, he'll attempt to take the next critical step, 14 00:00:48,542 --> 00:00:52,125 advancing the armored shark suits he began building 40 years ago, 15 00:00:52,208 --> 00:00:57,792 to withstand attacks from some of the biggest, baddest sharks on Earth. 16 00:00:57,875 --> 00:00:59,875 [Jeremiah] Whoa! 17 00:00:59,959 --> 00:01:03,041 [narrator] And to test his work, he'll put himself inside the jaws 18 00:01:03,125 --> 00:01:05,291 of these lethal predators. 19 00:01:05,375 --> 00:01:06,834 [Jeremiah] Look at the force on that! 20 00:01:06,917 --> 00:01:08,041 [narrator] No cages. 21 00:01:08,125 --> 00:01:09,625 [Jeremiah] It's got a hold of it. 22 00:01:10,333 --> 00:01:11,959 [narrator] No second chances. 23 00:01:12,041 --> 00:01:13,625 [Joe] These sharks are going nuts already! 24 00:01:13,709 --> 00:01:14,917 [narrator] Just man. 25 00:01:14,959 --> 00:01:16,208 [Jeremiah] Watch out! 26 00:01:16,291 --> 00:01:17,834 [narrator] Versus shark. 27 00:01:25,166 --> 00:01:29,083 And here to tell us more about the new protective shark suit is 28 00:01:29,166 --> 00:01:31,000 inventor and marine biologist... 29 00:01:31,083 --> 00:01:32,542 Jeremiah Sullivan. 30 00:01:32,625 --> 00:01:34,083 [applause] 31 00:01:34,166 --> 00:01:36,375 [Jeremiah, over TV] I have plans to produce 32 00:01:36,458 --> 00:01:38,250 materials which would provide 33 00:01:38,333 --> 00:01:42,834 a very lightweight form of protection to other divers. 34 00:01:42,917 --> 00:01:46,542 [narrator] For more than 40 years, Jeremiah's led a groundbreaking mission 35 00:01:46,625 --> 00:01:51,041 to eliminate the steel bars between man and shark. 36 00:01:52,041 --> 00:01:54,000 [Jeremiah] I felt it was important to study these animals 37 00:01:54,083 --> 00:01:54,959 in their own environment, 38 00:01:55,041 --> 00:01:59,041 not from within the confines of the cage, which can alter the very behavior 39 00:01:59,125 --> 00:02:00,375 that you're trying to study. 40 00:02:00,458 --> 00:02:02,333 So in the end, yes, I did have to do things 41 00:02:02,417 --> 00:02:05,166 that had never been done before. 42 00:02:05,250 --> 00:02:09,750 [narrator] Jeremiah's cage-free obsession was cemented in reality years ago, 43 00:02:09,834 --> 00:02:12,583 when he did the unthinkable. 44 00:02:12,667 --> 00:02:16,375 He slipped out of the safety of his shark cage and hitched a ride 45 00:02:16,458 --> 00:02:20,500 on the tail of a massive, 17-foot great white. 46 00:02:25,291 --> 00:02:27,458 [Jeremiah] I felt compelled to make contact 47 00:02:27,542 --> 00:02:32,041 to prove that divers could interact safely 48 00:02:32,125 --> 00:02:34,750 with even these great predators. 49 00:02:34,834 --> 00:02:39,166 [narrator] Jeremiah's dream of removing the walls between man and predator 50 00:02:39,250 --> 00:02:43,792 propelled him to become a pioneer in shark protection technology. 51 00:02:43,875 --> 00:02:46,792 I started the shark suit project in 1978, 52 00:02:47,291 --> 00:02:52,709 and a lot of that was based around my studies of medieval chainmail. 53 00:02:52,792 --> 00:02:57,083 [narrator] Jeremiah continued improving and strengthening his chainmail suit 54 00:02:57,166 --> 00:03:00,542 until it became the standard for shark protection. 55 00:03:03,667 --> 00:03:09,125 But it still couldn't save divers from larger, more powerful shark species. 56 00:03:09,208 --> 00:03:11,875 The suit really isn't designed to work with something that large, 57 00:03:11,959 --> 00:03:15,083 and I intend of course to work with much larger sharks. 58 00:03:15,166 --> 00:03:19,709 There really is so much more that we have to learn from these large predators. 59 00:03:19,792 --> 00:03:22,583 You just have to be able to get close enough to them to conduct 60 00:03:22,667 --> 00:03:24,417 those kinds of studies. 61 00:03:24,500 --> 00:03:27,208 [narrator] Now, after 40 years of development, 62 00:03:27,291 --> 00:03:29,750 only one step remains before Jeremiah 63 00:03:29,834 --> 00:03:33,667 can build his newest state-of-the-art shark proof suit, 64 00:03:33,750 --> 00:03:36,250 he must test his innovative body armor 65 00:03:38,000 --> 00:03:42,333 by diving in among these fierce and powerful predators. 66 00:03:42,417 --> 00:03:47,291 To get bitten intentionally. 67 00:03:47,375 --> 00:03:50,875 I can't possibly expect someone else to trust a safety product 68 00:03:50,959 --> 00:03:52,875 designed to protect them in lethal circumstances, 69 00:03:52,959 --> 00:03:55,959 if I don't have the backbone to do that myself. 70 00:03:57,834 --> 00:04:00,333 [narrator] But before becoming voluntary shark bait, 71 00:04:00,417 --> 00:04:02,417 Jeremiah first needs to understand 72 00:04:02,500 --> 00:04:06,375 everything he can about how these creatures kill. 73 00:04:06,458 --> 00:04:11,458 Their bite force, their body strength, and most of all, 74 00:04:12,583 --> 00:04:17,083 if his new materials can take the punishment. 75 00:04:17,166 --> 00:04:20,000 [Jeremiah] To better understand the limits and the capabilities of this new tech 76 00:04:20,083 --> 00:04:23,500 that I'm working on, I need real world information. 77 00:04:23,583 --> 00:04:24,834 That's not the kind of thing you can find 78 00:04:24,917 --> 00:04:26,625 on the Internet or in a textbook somewhere. 79 00:04:35,792 --> 00:04:37,959 [narrator] It all begins here. 80 00:04:38,917 --> 00:04:44,750 At a shark-infested dive site 50 miles off the coast of Florida, in the Bahamas. 81 00:04:44,834 --> 00:04:46,333 [Jeremiah] That's the shortest of all of them? 82 00:04:46,417 --> 00:04:48,834 -[Joe] Yeah. -[Stuart] Yep. 83 00:04:48,917 --> 00:04:51,625 [narrator] Joining Jeremiah on this potentially fatal expedition is underwater 84 00:04:51,709 --> 00:04:55,667 cinematographer and director of the Atlantic Shark Institute, Joe Romeiro, 85 00:04:55,750 --> 00:04:59,750 who has been assisting shark research projects for over a decade. 86 00:04:59,834 --> 00:05:01,834 [Jeremiah] So, all these have to be set. 87 00:05:01,917 --> 00:05:04,041 Before we start ramping up the hazard 88 00:05:04,125 --> 00:05:05,959 of some of the tests that we'd like to conduct, 89 00:05:06,041 --> 00:05:10,542 I'm keen to find out what the behavior is of the sharks in this region. 90 00:05:11,250 --> 00:05:13,250 Are these sharks accustomed to being fed? 91 00:05:13,333 --> 00:05:16,166 If that's the case, it could make things a bit riskier, 92 00:05:16,250 --> 00:05:18,208 but that could assist us in trying 93 00:05:18,291 --> 00:05:22,542 to get through these experiments as efficiently as possible. 94 00:05:22,625 --> 00:05:25,375 The main thing I'd like to evaluate on this dive is, 95 00:05:25,500 --> 00:05:28,208 uh, a baseline for how they interact with each other, 96 00:05:28,291 --> 00:05:31,500 how they interact with divers and once we bring bait down, 97 00:05:31,583 --> 00:05:33,250 if that changes the equation much. 98 00:05:33,333 --> 00:05:35,500 Okay, we've got good clarity right now, but the tide's changing. 99 00:05:35,583 --> 00:05:37,458 So let's get in before it gets dirty. 100 00:05:37,542 --> 00:05:38,583 Great, let's go! 101 00:05:39,834 --> 00:05:41,333 Want me to wait there? 102 00:05:41,417 --> 00:05:44,166 [narrator] Poor visibility could make it impossible 103 00:05:44,250 --> 00:05:49,500 for the divers to spot aggressive sharks, until it's too late. 104 00:05:49,583 --> 00:05:52,417 So it's critical that the experiment conclude 105 00:05:52,500 --> 00:05:55,041 before the visibility deteriorates. 106 00:05:56,709 --> 00:05:59,166 Current shark suits decrease mobility, 107 00:05:59,250 --> 00:06:04,125 and offer little protection against bites from these larger, powerful species. 108 00:06:04,208 --> 00:06:08,959 So Jeremiah and his crew choose to dive unprotected. 109 00:06:30,083 --> 00:06:32,208 [Jeremiah] Joe, let's get in position down in the sand. 110 00:06:33,291 --> 00:06:34,750 [Joe] That sounds good. 111 00:06:41,083 --> 00:06:43,166 [Jeremiah] Nice big hammer coming in. 112 00:06:45,917 --> 00:06:49,041 [narrator] The great hammerhead. 113 00:06:49,125 --> 00:06:54,834 Reaching lengths of up to 20 feet long, and weighing up to 1,000 pounds, 114 00:06:54,917 --> 00:06:59,709 the great hammerhead is the largest of all hammerhead sharks. 115 00:06:59,792 --> 00:07:04,041 It's thought that their flat, unusually shaped head, called a cephalofoil, 116 00:07:04,125 --> 00:07:09,834 is lined with electroreceptors to help detect their favorite food: stingrays. 117 00:07:09,917 --> 00:07:15,333 But they are also known to be cannibals, hunting smaller sharks. 118 00:07:15,417 --> 00:07:18,083 Two hammerheads now. 119 00:07:19,083 --> 00:07:23,625 Whoa, man... They've got to be at least 800 may be 1,000 pounds. 120 00:07:24,250 --> 00:07:27,542 [narrator] Their wide, flat heads also act as rudders, 121 00:07:27,625 --> 00:07:30,667 making these huge beasts incredibly nimble. 122 00:07:33,166 --> 00:07:36,959 [Jeremiah] Amazing how such a large animal can turn on a dime. 123 00:07:38,750 --> 00:07:43,333 [narrator] And that tight turning radius can make these sharks especially risky, 124 00:07:43,417 --> 00:07:45,083 because a quick U-turn can put 125 00:07:45,166 --> 00:07:50,417 an unsuspecting diver on the biting end of one of these giants in an instant. 126 00:07:50,500 --> 00:07:53,625 Okay, we're in position. Let's get the bait. 127 00:07:56,125 --> 00:07:57,709 [narrator] Jeremiah plans to bait 128 00:07:57,792 --> 00:08:00,458 the gathering sharks into biting his test equipment, 129 00:08:00,542 --> 00:08:04,834 a risky practice ideally used only for research purposes. 130 00:08:04,917 --> 00:08:08,166 But since the behavior of any given shark species 131 00:08:08,250 --> 00:08:12,083 can vary depending on how familiar they are with being fed by humans, 132 00:08:12,166 --> 00:08:17,667 Jeremiah first needs to gauge how food-motivated these local sharks are. 133 00:08:17,750 --> 00:08:19,000 [Jeremiah] Whoa, guys. 134 00:08:24,083 --> 00:08:25,291 Excellent! 135 00:08:28,291 --> 00:08:30,000 [Joe] These sharks are going nuts already. 136 00:08:32,750 --> 00:08:34,750 [Jeremiah] They're coming straight in. 137 00:08:34,834 --> 00:08:37,834 [narrator] As expected, the bait is stirring these sharks 138 00:08:37,917 --> 00:08:40,208 into a manageable free for all. 139 00:08:40,291 --> 00:08:42,375 At least for now. 140 00:08:42,458 --> 00:08:44,750 [Jeremiah] They're more interested in the bait than they are us. 141 00:08:44,834 --> 00:08:45,917 That's good news. 142 00:08:48,417 --> 00:08:51,000 [Joe] Is it just me... or is the tide shifting? 143 00:08:51,083 --> 00:08:52,291 It's getting murky. 144 00:08:53,834 --> 00:08:57,875 The visibility is dropping significantly. 145 00:08:57,959 --> 00:09:03,375 [narrator] Jeremiah and his team are unaware that a storm brewing 40 feet above 146 00:09:03,458 --> 00:09:05,667 is impacting their visibility. 147 00:09:07,291 --> 00:09:13,125 In mere seconds, their experiment turns from dangerous to deadly. 148 00:09:13,875 --> 00:09:16,291 [Jeremiah] It's making it a lot harder to spot them. 149 00:09:19,208 --> 00:09:20,792 Look... coming in fast! 150 00:09:20,875 --> 00:09:21,917 Bull shark. 151 00:09:24,417 --> 00:09:27,041 [narrator] The bull shark. 152 00:09:27,125 --> 00:09:31,959 A dangerous and unpredictable species that reaches only seven feet in length, 153 00:09:32,041 --> 00:09:35,667 but ranks number three for the human lives it's claimed. 154 00:09:37,458 --> 00:09:40,375 Always staying out in the distance in that murky water. 155 00:09:41,500 --> 00:09:43,291 Keep an eye out for them, guys. 156 00:09:43,709 --> 00:09:47,083 [narrator] They are one of the sharks most feared by divers. 157 00:09:47,333 --> 00:09:51,625 And they're a treacherous addition to an already dangerous dive. 158 00:09:53,291 --> 00:09:54,875 [Joe] Jeremiah! 159 00:09:56,417 --> 00:09:57,750 [Jeremiah] Wow! 160 00:09:59,792 --> 00:10:01,166 That was a close one. 161 00:10:03,709 --> 00:10:06,208 [Joe] This is starting not to be safe. 162 00:10:06,291 --> 00:10:08,542 Guys, I don't really like the looks of this. 163 00:10:08,625 --> 00:10:11,000 Wait! 164 00:10:11,083 --> 00:10:13,583 Can't quite make out what that large shark is out there... 165 00:10:15,792 --> 00:10:17,375 [Jeremiah] It's not a hammerhead. 166 00:10:17,458 --> 00:10:18,750 And I'm sure it's not a bull. 167 00:10:19,959 --> 00:10:21,542 Holy shit! 168 00:10:21,625 --> 00:10:22,625 Tiger shark! 169 00:10:26,250 --> 00:10:28,291 [Joe] Another one coming in. 170 00:10:28,375 --> 00:10:32,625 [narrator] Jeremiah Sullivan is taking a dangerous step toward creating 171 00:10:32,709 --> 00:10:35,083 the next evolution of his shark-proof armor. 172 00:10:35,542 --> 00:10:37,375 Wow! 173 00:10:38,041 --> 00:10:40,500 [narrator] But before this marine biologist 174 00:10:41,041 --> 00:10:43,500 provokes a deadly tiger shark bite. 175 00:10:43,583 --> 00:10:45,250 Let me get the bait. 176 00:10:45,333 --> 00:10:48,542 [narrator] He first descends into shark-infested waters. 177 00:10:48,625 --> 00:10:50,333 [Joe] These sharks are going nuts already. 178 00:10:50,792 --> 00:10:53,250 [narrator] To gauge how the locals will behave. 179 00:10:53,333 --> 00:10:55,250 They're coming straight in. 180 00:10:56,375 --> 00:10:57,291 Wow! 181 00:10:58,959 --> 00:11:03,041 [narrator] But an approaching storm has just dialed up the danger. 182 00:11:03,125 --> 00:11:06,917 Visibility is dropping pretty significantly here. 183 00:11:07,000 --> 00:11:10,291 [narrator] Making it impossible to spot incoming sharks 184 00:11:10,375 --> 00:11:13,166 until they're nearly on top of the team. 185 00:11:13,250 --> 00:11:15,375 [Joe] Jeremiah... look out! 186 00:11:15,458 --> 00:11:16,583 [Jeremiah] Holy shit! 187 00:11:16,667 --> 00:11:18,291 Tiger shark! 188 00:11:19,750 --> 00:11:23,208 Big tiger... coming in slow but deliberate. 189 00:11:24,750 --> 00:11:26,750 Yep, she's trying to push past me. 190 00:11:30,041 --> 00:11:31,667 Wow! 191 00:11:31,750 --> 00:11:35,834 Whoa... she's coming back already! Hang on now. 192 00:11:35,917 --> 00:11:39,709 [Jeremiah] After 50 years or so, swimming around with these big creatures, 193 00:11:39,792 --> 00:11:41,917 if you haven't figured out a way to safely redirect them 194 00:11:42,000 --> 00:11:44,291 when they come in too close to you, then uh, 195 00:11:44,375 --> 00:11:45,792 you're doing something wrong. 196 00:11:45,875 --> 00:11:49,417 The key is to stay calm, so that you can adapt 197 00:11:49,500 --> 00:11:51,792 to whatever species you're working with. 198 00:11:51,875 --> 00:11:55,458 She's settling down a bit but that could change in a second. 199 00:11:57,792 --> 00:12:00,500 [narrator] The tiger shark. 200 00:12:00,583 --> 00:12:05,125 Reaching up to 18 feet in length and weighing more than a compact car, 201 00:12:05,208 --> 00:12:09,250 these notorious, unpredictable apex predators are some of 202 00:12:09,333 --> 00:12:11,792 the deadliest sharks on the planet. 203 00:12:11,875 --> 00:12:15,542 Ranked number two for the most fatal attacks against humans, 204 00:12:15,625 --> 00:12:20,834 the tiger has one of the most devastating bites of any shark species. 205 00:12:20,917 --> 00:12:23,583 Its saw-shaped teeth are so sharp, 206 00:12:23,667 --> 00:12:28,125 they can easily saw through turtle shells, and bone. 207 00:12:30,250 --> 00:12:32,041 Keep an eye on this one, guys. 208 00:12:32,125 --> 00:12:34,667 It's smelling the bait. 209 00:12:34,750 --> 00:12:36,875 It's going to circle back on us. 210 00:12:37,375 --> 00:12:39,208 He's going for the bait box. 211 00:12:46,375 --> 00:12:47,792 [Jeremiah] Wow! 212 00:12:48,458 --> 00:12:51,458 [Joe] It's getting risky. 213 00:12:51,542 --> 00:12:54,750 Yeah, the conditions are getting a bit sketchy. 214 00:12:54,834 --> 00:12:57,625 This isn't safe with that big tiger around. 215 00:12:57,709 --> 00:13:01,417 [narrator] Bad weather above continues to churn the sea below. 216 00:13:01,500 --> 00:13:04,333 Let's head on up before we lose sight of the boat. 217 00:13:09,625 --> 00:13:12,333 [narrator] But even in this fading visibility, 218 00:13:12,417 --> 00:13:14,750 it's crystal clear that there are more 219 00:13:14,834 --> 00:13:19,500 than enough huge, aggressive sharks for Jeremiah's experiment, 220 00:13:19,583 --> 00:13:23,500 and they seem eager to show off their bite force. 221 00:13:23,583 --> 00:13:26,000 It was hard to see what was going on, but, behaviorally, 222 00:13:26,083 --> 00:13:28,792 the hammers performed pretty much as expected. 223 00:13:28,875 --> 00:13:31,417 They're big, they're powerful, they're gentle. 224 00:13:31,500 --> 00:13:35,959 However that's the playful side, there is this other side, 225 00:13:36,041 --> 00:13:38,625 where if you are prey or with these other species 226 00:13:38,709 --> 00:13:41,166 the bull sharks, tiger sharks, it's a whole different animal. 227 00:13:42,291 --> 00:13:43,333 Wow! 228 00:13:44,792 --> 00:13:47,542 Never forget how capable they are, 229 00:13:47,625 --> 00:13:49,792 how powerful they are, what they do in their daily lives 230 00:13:49,875 --> 00:13:52,500 and that's to eat other things in order to survive. 231 00:13:52,583 --> 00:13:54,667 So what do you think, like, our next steps are? 232 00:13:54,750 --> 00:13:56,166 Well, now that we've got a pretty good handle 233 00:13:56,250 --> 00:13:57,542 on how these sharks are behaving, 234 00:13:57,625 --> 00:13:59,959 next thing we want to do is test the bite force. 235 00:14:01,291 --> 00:14:04,291 Well, we're not going to be able to do it in this weather. 236 00:14:04,375 --> 00:14:06,667 I say we go back in a little bit and wait for this wind to settle down. 237 00:14:06,750 --> 00:14:09,041 -[Joe] Make some plans. -[laughs] 238 00:14:13,375 --> 00:14:16,792 [narrator] Rough seas force Jeremiah's team to change boats 239 00:14:16,875 --> 00:14:22,208 and head over 80 miles north of Bimini to calmer waters for the next test: 240 00:14:22,291 --> 00:14:24,083 a tiger shark's bite force. 241 00:14:24,166 --> 00:14:26,291 To design armor that can withstand 242 00:14:26,375 --> 00:14:29,208 the crushing power of a tiger shark's bite, 243 00:14:29,291 --> 00:14:34,125 Jeremiah first needs to measure the force generated by its jaws. 244 00:14:36,417 --> 00:14:38,875 -We've got all of it broken out, huh? -Yeah, yep. 245 00:14:38,959 --> 00:14:43,250 A lot of what we know about shark's bite force is based on computer models. 246 00:14:43,333 --> 00:14:46,667 But computer models don't always replicate the real thing. 247 00:14:46,750 --> 00:14:49,083 There's very little information about the reality 248 00:14:49,166 --> 00:14:51,750 of how hard a tiger shark can bite. 249 00:14:51,834 --> 00:14:55,917 Even if I designed impenetrable chainmail for larger sharks, 250 00:14:56,000 --> 00:14:58,458 I wouldn't be damaged from the teeth, 251 00:14:58,542 --> 00:15:02,375 but what happens inside with all the hard and soft tissue damage in my body, 252 00:15:02,458 --> 00:15:04,375 that's an entirely different story. 253 00:15:04,458 --> 00:15:09,792 If I'm putting people's lives on the line, I need real world results. 254 00:15:10,583 --> 00:15:13,208 And for that, I've created a special device. 255 00:15:13,291 --> 00:15:14,625 So basically how's this all work? 256 00:15:14,709 --> 00:15:16,625 Well, it's a pressure plate. Ideally it-- 257 00:15:16,709 --> 00:15:18,709 -[Joe] It squeezes it. -On these two sides correct. 258 00:15:18,792 --> 00:15:20,834 It's designed to have a semi-soft surface 259 00:15:20,917 --> 00:15:22,750 so they don't damage their mouth with their teeth, 260 00:15:22,834 --> 00:15:27,750 and the gauges then will register whatever that shark applies. 261 00:15:27,834 --> 00:15:29,458 -What the pressure is. -Yeah. 262 00:15:29,542 --> 00:15:32,500 And it will inform me whether or not the armor that I've built 263 00:15:32,583 --> 00:15:34,041 will be able to withstand their bite. 264 00:15:34,125 --> 00:15:35,166 [Joe] Yeah. 265 00:15:36,208 --> 00:15:37,333 They're everywhere. 266 00:15:38,417 --> 00:15:39,542 [man] Vis is good! 267 00:15:41,625 --> 00:15:42,750 [Jeremiah] I got it. 268 00:16:09,417 --> 00:16:12,583 [narrator] Beneath the surface, Jeremiah has descended into a group 269 00:16:12,667 --> 00:16:17,250 of several tiger sharks, already circling. 270 00:16:17,333 --> 00:16:20,875 [Jeremiah] It's looking perfect. The bait seems to be working well. 271 00:16:20,959 --> 00:16:23,083 We've certainly got all the players down here. 272 00:16:24,625 --> 00:16:26,208 Six tiger sharks... 273 00:16:28,375 --> 00:16:31,417 and a hammerhead. 274 00:16:31,500 --> 00:16:34,917 [Jeremiah] I'm going to set up next to the bait-crate. 275 00:16:36,959 --> 00:16:39,417 [narrator] The plan is to lure a tiger shark close enough 276 00:16:39,500 --> 00:16:42,583 to touch the sensory organs on its snout, 277 00:16:42,667 --> 00:16:45,875 triggering the shark to open its mouth to feed. 278 00:16:45,959 --> 00:16:50,250 Something the sharks in the area are accustomed to. 279 00:16:50,333 --> 00:16:55,083 [Jeremiah] Yeah, this spot is perfect, man. Bring them straight in. 280 00:16:55,166 --> 00:17:00,417 [narrator] One misguided tap or irritable shark, and the men could lose a hand. 281 00:17:01,750 --> 00:17:04,000 Or worse. 282 00:17:04,083 --> 00:17:08,291 But this is the only known technique that can focus their bites on Jeremiah's 283 00:17:08,375 --> 00:17:11,000 specialized pressure plate. 284 00:17:11,083 --> 00:17:13,834 [Joe] I don't think getting a shark is going to be a problem. 285 00:17:15,166 --> 00:17:16,709 [Jeremiah] Yeah, no kidding. 286 00:17:17,250 --> 00:17:21,834 [narrator] Once again, tidal conditions have turned a bold experiment 287 00:17:21,917 --> 00:17:24,625 into a potentially lethal one. 288 00:17:24,709 --> 00:17:28,375 [diver] Watch your back, guys. There's literally zero current down here. 289 00:17:28,458 --> 00:17:32,750 [narrator] Two-thirds of a shark's brain is devoted to its sense of smell, 290 00:17:32,834 --> 00:17:38,125 enabling them to detect even the faintest odors and direction of potential food. 291 00:17:39,250 --> 00:17:41,208 But with no current to direct them, 292 00:17:41,291 --> 00:17:44,959 the scent of bait spreads in all directions, 293 00:17:45,041 --> 00:17:48,625 luring hungry sharks from everywhere. 294 00:17:48,709 --> 00:17:52,667 Jeremiah's team is literally surrounded. 295 00:17:52,750 --> 00:17:54,250 [Joe] Tiger coming in. 296 00:18:05,750 --> 00:18:07,917 [Jeremiah] Got it... 180 pounds. 297 00:18:10,792 --> 00:18:14,083 [narrator] The first measurement produces a force just stronger 298 00:18:14,166 --> 00:18:19,250 than the bite of an average human, perhaps just an exploratory nibble. 299 00:18:19,333 --> 00:18:21,250 And they just keep coming! 300 00:18:23,375 --> 00:18:25,000 They're getting more revved up. 301 00:18:28,542 --> 00:18:33,875 [narrator] The tigers grow bolder as Jeremiah rushes to re-bait the device. 302 00:18:34,959 --> 00:18:40,834 It's a dangerous recipe: zero current, six hungry tiger sharks. 303 00:18:41,417 --> 00:18:44,083 And Jeremiah is in the middle of it. 304 00:18:44,166 --> 00:18:45,959 [diver] Watch out, Jeremiah. 305 00:18:48,041 --> 00:18:50,959 [Jeremiah] Careful, guys, they're coming in from every direction now. 306 00:18:51,041 --> 00:18:52,333 This is not good. 307 00:18:54,583 --> 00:18:55,959 Watch out... hammer! 308 00:19:01,291 --> 00:19:03,125 Watch out... Watch out! 309 00:19:07,792 --> 00:19:11,834 [narrator] Biologist and inventor, Jeremiah Sullivan is conducting 310 00:19:11,917 --> 00:19:14,542 a battery of tests to determine if the next-generation 311 00:19:14,625 --> 00:19:17,792 shark armor he's designing will withstand 312 00:19:17,875 --> 00:19:20,458 the bone-crushing bite force of a tiger shark. 313 00:19:21,709 --> 00:19:23,208 Tiger coming in. 314 00:19:24,166 --> 00:19:28,458 [narrator] In his fifth and final test, he'll sustain a bite from the biggest 315 00:19:28,542 --> 00:19:29,959 tiger shark he can find. 316 00:19:30,041 --> 00:19:32,083 [Jeremiah] They're getting more revved up. 317 00:19:32,166 --> 00:19:35,709 [narrator] But already, his second test is taking a treacherous turn. 318 00:19:35,792 --> 00:19:37,834 [diver] Watch out, Jeremiah. 319 00:19:37,917 --> 00:19:41,208 [narrator] A lack of current attracts hungry sharks from all directions, 320 00:19:41,291 --> 00:19:45,375 making it impossible for the team to know where they'll come from next. 321 00:19:45,458 --> 00:19:48,333 [Jeremiah] Careful guys, they're coming in from every direction now. 322 00:19:48,417 --> 00:19:50,291 This is not good. 323 00:19:50,375 --> 00:19:54,166 [narrator] But Jeremiah refuses to ascend until he captures a bite 324 00:19:54,250 --> 00:19:55,625 from the largest shark in the group. 325 00:19:56,542 --> 00:19:57,792 Watch out... hammer! 326 00:20:03,041 --> 00:20:05,083 Watch out... watch out! 327 00:20:06,291 --> 00:20:07,959 Whoa! That was a close one. 328 00:20:08,709 --> 00:20:09,875 [Joe] They're everywhere. 329 00:20:14,375 --> 00:20:16,750 [Jeremiah] I'm all baited up. Let's get a bite. 330 00:20:18,709 --> 00:20:19,875 Here comes one. 331 00:20:21,333 --> 00:20:22,417 Ready? 332 00:20:22,500 --> 00:20:23,875 Here we go. 333 00:20:25,875 --> 00:20:29,458 Good one... 220 pounds. 334 00:20:29,542 --> 00:20:31,959 [narrator] While only about the same bite force as a pit-bull, 335 00:20:32,041 --> 00:20:34,542 220 pounds behind a mouth full 336 00:20:34,625 --> 00:20:39,083 of razor-sharp teeth would easily slice through any flesh. 337 00:20:39,166 --> 00:20:43,625 But Jeremiah knows these tigers can do a lot better. 338 00:20:43,709 --> 00:20:47,417 He also knows he's pushing his luck. 339 00:20:47,500 --> 00:20:51,333 [Jeremiah] Let's get a bite from this real big girl here. 340 00:20:51,417 --> 00:20:54,834 [narrator] Jeremiah's holding out for one last powerful bite. 341 00:20:55,834 --> 00:20:58,667 [Jeremiah] Here she comes. This is your shot. 342 00:21:03,875 --> 00:21:05,333 300 pounds. 343 00:21:05,417 --> 00:21:07,959 I could really feel her biting down on that one. 344 00:21:08,041 --> 00:21:13,166 [narrator] 300 pounds is easily enough force to break a human arm. 345 00:21:13,834 --> 00:21:17,166 [Jeremiah] That was a really good bite, man. 346 00:21:17,250 --> 00:21:21,000 [narrator] But these lower than expected measurements have Jeremiah wondering 347 00:21:21,083 --> 00:21:23,750 if the sharks are holding back, or if there's something else 348 00:21:23,834 --> 00:21:27,583 that makes their attacks so dangerous. 349 00:21:27,667 --> 00:21:30,333 [Jeremiah] Yeah, it's getting pretty crowded down here. 350 00:21:30,417 --> 00:21:32,875 Let's head out before someone gets nipped. 351 00:21:39,583 --> 00:21:41,417 [Joe] There was not really any current, 352 00:21:41,500 --> 00:21:43,709 so they were coming from all different angles. 353 00:21:43,792 --> 00:21:44,792 Was just too sketchy, man. 354 00:21:44,875 --> 00:21:46,333 Wow. Whoo! 355 00:21:46,417 --> 00:21:48,834 Computer models can often be very different 356 00:21:48,917 --> 00:21:51,291 than real-world data from large, 357 00:21:51,375 --> 00:21:52,583 free swimming sharks. 358 00:21:52,667 --> 00:21:54,667 [Joe] Another one coming in. 359 00:21:54,750 --> 00:21:56,542 [Jeremiah] The bite forces that we recorded here were a lot lower 360 00:21:56,625 --> 00:21:58,625 than many people would have predicted. 361 00:21:58,709 --> 00:22:01,083 300 Pounds! 362 00:22:01,166 --> 00:22:04,208 This is why I believe that it's more than bite force 363 00:22:04,291 --> 00:22:08,000 that makes working with very large sharks more dangerous. 364 00:22:08,083 --> 00:22:13,959 [narrator] Like a boxer throwing a punch, or a baseball player stepping into a hit, 365 00:22:15,333 --> 00:22:19,458 Jeremiah theorizes sharks use their entire muscle-bound bodies, 366 00:22:19,542 --> 00:22:23,875 to inflict more damage during an attack than previously thought. 367 00:22:23,959 --> 00:22:26,000 [Jeremiah] Okay, we've got 40 pounds there. 368 00:22:26,083 --> 00:22:29,333 [narrator] To test these larger sharks' overall strength before 369 00:22:29,417 --> 00:22:31,125 allowing himself to be attacked. 370 00:22:31,208 --> 00:22:33,667 So how does this whole apparatus work? 371 00:22:33,750 --> 00:22:36,583 [narrator] Jeremiah has built another, one-of-a-kind device. 372 00:22:36,667 --> 00:22:41,458 We built this thing as a joystick so that it's able to measure in multi-directions. 373 00:22:41,542 --> 00:22:42,667 -[Joe] Strength. -Torque, 374 00:22:42,750 --> 00:22:45,583 the shaking of the head, and the pull. 375 00:22:45,667 --> 00:22:47,500 Honestly, this is a real-world test. 376 00:22:47,583 --> 00:22:49,542 [Jeremiah] Think about this thing like my body. 377 00:22:49,625 --> 00:22:51,709 Things that have happened to this instrument 378 00:22:51,792 --> 00:22:53,750 with these big sharks in the water 379 00:22:53,834 --> 00:22:56,667 are the same traumas that a diver would be subjected to 380 00:22:56,750 --> 00:22:58,500 if he finds himself in that situation. 381 00:22:58,583 --> 00:23:01,625 And you want to measure that force and strength to be able to determine 382 00:23:01,709 --> 00:23:03,291 what your body can withstand. 383 00:23:03,375 --> 00:23:07,417 If my body can withstand the kind of trauma 384 00:23:07,500 --> 00:23:11,125 that could occur during these kinds of bites. 385 00:23:11,208 --> 00:23:14,917 [narrator] Jeremiah conducts his strength experiment in an area patrolled 386 00:23:15,000 --> 00:23:20,375 by one of the most powerful species of shark: the great hammerhead. 387 00:23:21,333 --> 00:23:24,542 Great hammerheads are not known for their bite force, 388 00:23:24,625 --> 00:23:28,417 but they are known for their tremendous muscular strength. 389 00:23:28,500 --> 00:23:30,917 Recent studies have shown great hammerheads 390 00:23:31,000 --> 00:23:33,792 to be among the hardest fighting sharks out there, 391 00:23:33,875 --> 00:23:36,208 which makes them a perfect candidate for this test. 392 00:23:37,375 --> 00:23:38,417 Hey, guys... 393 00:23:38,500 --> 00:23:39,917 keep baiting so the sharks stick around. 394 00:23:40,000 --> 00:23:41,750 It's going to take me a couple of minutes to set this up. 395 00:23:44,333 --> 00:23:46,917 [narrator] The six-foot strength meter needs to remain secure 396 00:23:47,000 --> 00:23:49,792 to measure accurate readings. 397 00:23:49,875 --> 00:23:53,458 So Jeremiah must attach it to the only structure available. 398 00:23:53,542 --> 00:23:55,583 An old wreck. 399 00:23:55,667 --> 00:23:57,959 [Jeremiah] Yeah, I think that's as tight as it's going to get. 400 00:23:58,041 --> 00:24:01,125 [narrator] To get the hammers to "pull" on the strength meter, 401 00:24:01,208 --> 00:24:05,959 Jeremiah straps bait to a bite bag made from his old-style chainmail, 402 00:24:06,041 --> 00:24:09,875 tethered by a cable, which he'll hand feed to the sharks. 403 00:24:09,959 --> 00:24:12,333 [Jeremiah] Once they get onto this, we need to watch out. 404 00:24:12,417 --> 00:24:17,291 [narrator] And if hand feeding giant sharks wasn't enough to worry about. 405 00:24:17,375 --> 00:24:19,208 [Jeremiah] This could get a little bit chaotic. 406 00:24:19,291 --> 00:24:22,291 I have no idea if this wreck is sturdy enough to hold this rig. 407 00:24:22,375 --> 00:24:27,667 [narrator] Once the sharks start pulling, any body part caught in the cable 408 00:24:27,750 --> 00:24:29,500 could be severely injured. 409 00:24:30,542 --> 00:24:32,500 All right, we're all set. 410 00:24:35,875 --> 00:24:38,166 [Jeremiah] Look at all these beautiful hammers. 411 00:24:40,792 --> 00:24:42,291 Let's try to get some bites. 412 00:24:46,792 --> 00:24:48,333 [Jeremiah] Oh... [bleep] 413 00:24:48,417 --> 00:24:50,625 Almost, but she didn't quite grab on. 414 00:24:55,792 --> 00:24:57,792 [Jeremiah] Look at this one coming straight in. 415 00:24:59,834 --> 00:25:01,000 There's the first bite. 416 00:25:07,667 --> 00:25:12,000 [narrator] The first pull registers a force of around 280 pounds. 417 00:25:12,083 --> 00:25:15,667 Not powerful enough to cause any serious damage. 418 00:25:18,083 --> 00:25:20,500 [Jeremiah] Yeah, that clearly was not her full strength. 419 00:25:23,375 --> 00:25:26,417 Let me strap some more bait on this thing. 420 00:25:26,500 --> 00:25:29,542 [narrator] Perhaps a more enticing meal will provoke the shark 421 00:25:29,625 --> 00:25:31,792 to fight longer and harder. 422 00:25:31,875 --> 00:25:33,583 Here comes another one. 423 00:25:33,667 --> 00:25:35,500 It's not that much bigger, but let's see if we can get a bigger bite. 424 00:25:38,875 --> 00:25:41,917 Ah, that's my girl. There she goes. 425 00:25:45,792 --> 00:25:49,083 [narrator] The pull equals 320 pounds of force. 426 00:25:49,166 --> 00:25:50,667 Wow! 427 00:25:50,750 --> 00:25:52,792 [narrator] Which Jeremiah estimates is more than enough 428 00:25:52,875 --> 00:25:55,333 to pull human limbs from sockets. 429 00:25:55,959 --> 00:25:56,959 That was awesome. 430 00:25:59,583 --> 00:26:01,625 This is working out perfectly. 431 00:26:02,959 --> 00:26:06,834 There is a beautiful large female circling around from the outside. 432 00:26:07,458 --> 00:26:09,792 [narrator] But Jeremiah is determined. 433 00:26:09,875 --> 00:26:12,208 I want to get a reading from her. 434 00:26:12,291 --> 00:26:14,125 [narrator] To gather more data. 435 00:26:14,208 --> 00:26:16,125 Nope. Not that time. 436 00:26:16,208 --> 00:26:19,500 [narrator] From the most powerful sharks he can find. 437 00:26:19,583 --> 00:26:23,083 [Joe] She's pretty skittish. Careful, Jeremiah. 438 00:26:23,166 --> 00:26:24,458 [Jeremiah] Here she comes again. 439 00:26:32,166 --> 00:26:34,583 Oh, excellent. 440 00:26:34,667 --> 00:26:36,333 Look at the power on that thing. 441 00:26:38,792 --> 00:26:40,333 [Jeremiah] Whoa! 442 00:26:40,417 --> 00:26:42,583 Careful with the cable. 443 00:26:42,667 --> 00:26:44,667 [Joe] Watch out, watch out! 444 00:26:48,458 --> 00:26:51,083 [narrator] Shark-suit inventor Jeremiah Sullivan 445 00:26:51,166 --> 00:26:53,834 is locked in an undersea battle. 446 00:26:53,917 --> 00:26:55,542 [Jeremiah] Here comes that big girl. 447 00:26:55,625 --> 00:26:58,625 [narrator] With some of the ocean's most powerful sharks. 448 00:27:00,625 --> 00:27:02,458 [Jeremiah] Oh, she's got it... She's pulling it. 449 00:27:02,542 --> 00:27:06,625 [narrator] The question is: are they too powerful for his test equipment? 450 00:27:07,959 --> 00:27:09,166 [Jeremiah] Whoa! 451 00:27:10,875 --> 00:27:12,208 It's maxing out. 452 00:27:14,792 --> 00:27:17,083 [Joe] Watch out, watch out! 453 00:27:17,166 --> 00:27:18,250 [diver] Watch out for that cable. 454 00:27:21,291 --> 00:27:23,041 [diver] They ripped that chainmail. 455 00:27:23,125 --> 00:27:26,333 [Joe] I mean, I know they're strong but that's crazy. 456 00:27:28,291 --> 00:27:30,667 [Jeremiah] That chainmail is done. 457 00:27:30,750 --> 00:27:34,500 [narrator] A reading of over 400 pounds of bone-snapping force 458 00:27:34,583 --> 00:27:37,125 proves Jeremiah's theory, 459 00:27:37,208 --> 00:27:43,041 that body strength is a key factor in a shark's devastating bite, 460 00:27:43,125 --> 00:27:47,625 and the chainmail he's used for years against smaller species... 461 00:27:47,709 --> 00:27:49,583 We're not going to get any better readings than that. 462 00:27:49,667 --> 00:27:51,667 Let's head on up. 463 00:27:51,750 --> 00:27:54,917 [narrator] ...could've cost him a limb against these hungry hammerheads. 464 00:27:57,625 --> 00:27:59,834 [Joe] I really wasn't expecting that. 465 00:27:59,917 --> 00:28:03,250 -This chainmail took quite a beating. -[Joe] Wow. 466 00:28:03,333 --> 00:28:04,792 This didn't really do much. 467 00:28:04,875 --> 00:28:05,875 [Jeremiah] Then it's the power. 468 00:28:05,959 --> 00:28:08,333 It's when they torque, and they twist. 469 00:28:08,417 --> 00:28:12,959 Clearly this old-style chainmail does not hold up for these large animals. 470 00:28:14,750 --> 00:28:19,166 So next up, I want to start doing some of the tests on some of the new materials 471 00:28:19,250 --> 00:28:21,917 that have been designed for these large sharks. 472 00:28:23,709 --> 00:28:27,583 [narrator] For the past 40 years, Jeremiah's first-generation chainmail 473 00:28:27,667 --> 00:28:30,291 has been fending off smaller species, 474 00:28:30,375 --> 00:28:33,583 allowing him to study the animals up close. 475 00:28:34,333 --> 00:28:39,458 But larger, more powerful sharks forced him and other marine biologists 476 00:28:39,542 --> 00:28:41,709 into protective cages, 477 00:28:41,792 --> 00:28:45,542 restricting their ability to study many larger shark species. 478 00:28:48,125 --> 00:28:50,375 Jeremiah's dream is to build a shark proof suit 479 00:28:50,458 --> 00:28:53,792 that can withstand an attack from almost any shark, 480 00:28:55,375 --> 00:28:59,792 forever changing the way humans study these creatures. 481 00:28:59,875 --> 00:29:03,166 But an armored suit is only as strong as its weakest part. 482 00:29:05,667 --> 00:29:08,208 This will be the final phase of the experiment. 483 00:29:08,291 --> 00:29:09,542 The Materials Test. 484 00:29:11,333 --> 00:29:12,208 Alrighty. 485 00:29:12,291 --> 00:29:16,000 First, I'll be testing a new, advanced, multilayered version of my chainmail. 486 00:29:16,083 --> 00:29:20,542 It's very, very hard that basically replicates a human arm. 487 00:29:20,625 --> 00:29:23,959 Here, we have the second advanced material I created. 488 00:29:24,041 --> 00:29:27,667 A carbon fiber-based material that's been laminated into this core. 489 00:29:27,750 --> 00:29:30,709 It's designed to replicate a narrower part of a body. 490 00:29:31,959 --> 00:29:33,041 And this is the last one. 491 00:29:33,125 --> 00:29:35,166 An advanced fiber and resin formulation. 492 00:29:35,250 --> 00:29:39,041 This may look like a bit of drainpipe but you've actually got multiple layers, 493 00:29:39,125 --> 00:29:42,083 six layers in this case, of a special advanced fiber, 494 00:29:42,166 --> 00:29:44,291 laminated into a special resin. 495 00:29:44,375 --> 00:29:46,125 That makes it extremely durable. 496 00:29:46,750 --> 00:29:48,875 If any of these materials hold up as anticipated, 497 00:29:48,959 --> 00:29:51,458 I can use them to build a working prototype, 498 00:29:51,542 --> 00:29:54,750 which will be an unarticulated single piece of armor 499 00:29:54,834 --> 00:29:57,041 that I can test on my own body. 500 00:29:57,125 --> 00:30:01,792 If that goes well, I can then invest in a full body suit of lightweight, 501 00:30:01,875 --> 00:30:05,166 articulated armor that divers and research people could use anywhere. 502 00:30:10,000 --> 00:30:11,834 Alrighty. 503 00:30:11,917 --> 00:30:15,875 [narrator] If Jeremiah's state-of-the-art materials fail to withstand an attack 504 00:30:15,959 --> 00:30:19,083 from the tiger sharks circling below. 505 00:30:19,166 --> 00:30:22,083 [Jeremiah] Perfect... lots of tigers and good current. 506 00:30:22,166 --> 00:30:23,750 [narrator] The entire expedition, 507 00:30:23,834 --> 00:30:28,166 and a lifetime of work, will end in failure. 508 00:30:28,250 --> 00:30:30,291 [Jeremiah] Seriously, look at these big sharks. 509 00:30:31,333 --> 00:30:33,208 Exactly what we need. 510 00:30:34,709 --> 00:30:36,041 I'm going to go next to the bait. 511 00:30:40,291 --> 00:30:42,208 Woah! 512 00:30:42,291 --> 00:30:44,583 Well, these guys certainly appear hungry 513 00:30:44,667 --> 00:30:46,709 which is perfect for this test. 514 00:30:49,166 --> 00:30:51,542 All right. Test number one. 515 00:30:51,625 --> 00:30:55,875 [narrator] First on the menu, Jeremiah's newly engineered chainmail. 516 00:30:56,166 --> 00:30:57,959 Check this baby out. 517 00:31:01,500 --> 00:31:03,375 She clearly is not exerting all of her power. 518 00:31:05,625 --> 00:31:07,750 We'll see what happens on the next pass. 519 00:31:10,083 --> 00:31:11,208 Straight ahead. 520 00:31:17,625 --> 00:31:18,625 She's pulling it. 521 00:31:20,834 --> 00:31:22,959 [Joe] What was that? 522 00:31:23,041 --> 00:31:24,917 [Jeremiah] Feels like she's breaking the core. 523 00:31:27,208 --> 00:31:29,041 [Joe] But the chainmail held up. 524 00:31:29,125 --> 00:31:33,000 [narrator] The next-generation chainmail survived the tiger's teeth. 525 00:31:33,083 --> 00:31:36,125 But its flexibility won't prevent broken bones 526 00:31:36,208 --> 00:31:38,583 or crushed internal organs. 527 00:31:38,667 --> 00:31:43,208 Something more rigid is critical to keep Jeremiah, and future divers, 528 00:31:43,291 --> 00:31:46,083 alive and in one piece. 529 00:31:46,166 --> 00:31:48,375 [Jeremiah] I'm going to move on to test number two. 530 00:31:48,500 --> 00:31:49,583 Carbon fiber. 531 00:31:52,208 --> 00:31:55,709 I'm attaching some bait to it to make sure we get a good bite. 532 00:31:57,417 --> 00:31:59,250 [Joe] There's another one coming in. 533 00:32:02,667 --> 00:32:03,959 [Joe] Holy shit! 534 00:32:07,458 --> 00:32:09,250 Wow! 535 00:32:09,333 --> 00:32:10,959 [narrator] Jeremiah Sullivan is testing 536 00:32:11,041 --> 00:32:13,458 if any of the wearable materials he's invented 537 00:32:14,417 --> 00:32:17,709 can endure the deadly jaws of a tiger shark. 538 00:32:19,417 --> 00:32:21,834 [Jeremiah] I'm going to move on to test number two. 539 00:32:21,917 --> 00:32:24,458 [narrator] He hopes an external layer of carbon fiber 540 00:32:24,542 --> 00:32:28,583 could provide enough protection from the bone-snapping bites. 541 00:32:28,667 --> 00:32:31,625 [Jeremiah] I'm attaching some bait to it to make sure we get a good bite. 542 00:32:33,542 --> 00:32:35,875 [Joe] Look out, there's another one coming in. 543 00:32:40,166 --> 00:32:41,500 [Joe] Holy shit! 544 00:32:41,583 --> 00:32:43,583 [Jeremiah] Nice, here we go. 545 00:32:45,208 --> 00:32:47,041 [Joe] Watch out, hammer! 546 00:32:48,291 --> 00:32:50,208 Whoa! Whoa! 547 00:32:50,291 --> 00:32:52,375 [Jeremiah] Yeah, well, she's not done yet. 548 00:32:54,875 --> 00:32:56,417 Atta girl. 549 00:32:59,166 --> 00:33:01,542 She really has a hold on it. 550 00:33:04,208 --> 00:33:07,208 I didn't feel any breaks or punctures. That's a good sign. 551 00:33:08,709 --> 00:33:10,625 [narrator] The carbon fiber holds. 552 00:33:10,709 --> 00:33:15,000 But Jeremiah's not willing to take any unnecessary risks. 553 00:33:15,083 --> 00:33:18,125 If he's going to take the full bite of a tiger shark, 554 00:33:18,208 --> 00:33:23,125 he wants to be protected by the strongest, most lightweight material possible. 555 00:33:24,875 --> 00:33:27,458 [Jeremiah] Okay, on to the last one. 556 00:33:27,542 --> 00:33:31,917 [narrator] So next, Jeremiah tests his own secret recipe. 557 00:33:32,000 --> 00:33:35,041 An ultra-hard, ultra-light fiber resin composite 558 00:33:35,125 --> 00:33:37,083 he's been developing for years. 559 00:33:39,208 --> 00:33:40,375 [Jeremiah] There's one down low. 560 00:33:44,792 --> 00:33:46,750 [Joe] Ah, that's a really good bite, man! 561 00:33:47,959 --> 00:33:50,417 [Jeremiah] Oh, no you don't... hey! 562 00:33:52,959 --> 00:33:54,458 Well, that was a success. 563 00:33:56,709 --> 00:33:57,875 [Joe] Jeremiah! 564 00:34:01,125 --> 00:34:02,834 Are you all right? 565 00:34:02,917 --> 00:34:04,875 Yeah. 566 00:34:04,959 --> 00:34:07,125 That thing really throttled you. 567 00:34:07,208 --> 00:34:10,125 [Jeremiah] Yeah, these tigers really like to sneak up behind you. 568 00:34:10,208 --> 00:34:13,166 [narrator] The team has pushed its luck long enough. 569 00:34:13,250 --> 00:34:15,250 It's time to examine the evidence topside. 570 00:34:18,667 --> 00:34:20,166 [Jeremiah] We've got something broken in here. 571 00:34:27,959 --> 00:34:29,166 [Joe] Oh man. 572 00:34:33,166 --> 00:34:34,583 Did you hear that? 573 00:34:34,667 --> 00:34:37,125 So, if your arm was in there, it would be broken. 574 00:34:37,208 --> 00:34:40,458 Correct. You'll first want to keep the teeth from doing their damage. 575 00:34:40,542 --> 00:34:43,667 People don't die from broken bones, they die from shock and blood loss. 576 00:34:43,750 --> 00:34:47,041 But the chainmail here looks good. I don't see any missing rings on this. 577 00:34:47,125 --> 00:34:49,542 [Joe] It goes to show you that you need a hard exterior 578 00:34:49,625 --> 00:34:51,250 to resist that kind of bite. 579 00:34:51,333 --> 00:34:53,166 Yep. Now these materials... 580 00:34:55,041 --> 00:34:56,458 we'll look at this one first. 581 00:34:56,542 --> 00:34:57,792 That's the carbon fiber, right? 582 00:34:57,875 --> 00:34:58,959 [Jeremiah] Yeah. 583 00:35:01,166 --> 00:35:02,500 That's my girl. 584 00:35:05,166 --> 00:35:06,875 [Jeremiah] You guys see that? 585 00:35:06,959 --> 00:35:12,041 Just a couple of teeth pricks here, here, couple here, here. 586 00:35:12,125 --> 00:35:14,750 -[Joe] No breaks. -[Jeremiah] No breaks. 587 00:35:14,834 --> 00:35:16,250 Let's see what that resin did. 588 00:35:18,291 --> 00:35:20,458 Ah, that's a really good bite, man. 589 00:35:22,667 --> 00:35:25,792 Very, very light scratches. 590 00:35:25,875 --> 00:35:28,500 There's basically no damage to this at all. 591 00:35:28,583 --> 00:35:30,834 -And this is super thin. -Yeah. 592 00:35:30,917 --> 00:35:35,667 There's less damage on this because it's a harder composite of laminates. 593 00:35:35,750 --> 00:35:41,125 So, I'll use a combination from each of these cores and I'll build an arm 594 00:35:41,208 --> 00:35:43,125 that we can then test with these big biters 595 00:35:43,208 --> 00:35:44,959 and see how much damage they do to that! 596 00:35:45,041 --> 00:35:46,875 I can't wait to see what you're gonna come up with. 597 00:35:51,250 --> 00:35:54,875 [narrator] Jeremiah has collected essential, real-world data. 598 00:35:54,959 --> 00:35:56,792 [Jeremiah] They're coming straight in. 599 00:35:56,875 --> 00:36:00,125 -[narrator] About the behavior... -[Joe] Wow, look at the force on that! 600 00:36:00,208 --> 00:36:03,125 -[narrator] ...bite force... -[Joe] Look at the power on that thing! 601 00:36:03,208 --> 00:36:07,375 [narrator] ...and body strength of the ocean's deadliest sharks. 602 00:36:08,041 --> 00:36:11,417 Now, he can fabricate an armor prototype 603 00:36:11,500 --> 00:36:15,750 he believes will finally withstand a tiger shark's devastating bite. 604 00:36:15,834 --> 00:36:19,041 I haven't designed anything specifically like this before. 605 00:36:21,208 --> 00:36:25,709 [narrator] Jeremiah is literally willing to bet his own arm that this 606 00:36:25,792 --> 00:36:29,542 one-of-a-kind fiber-resin reinforced sleeve will protect him. 607 00:36:32,083 --> 00:36:35,041 I'm intentionally building this prototype oversized, 608 00:36:35,125 --> 00:36:37,959 so that, should things go wrong, I'll be able to pull my arm out. 609 00:36:39,375 --> 00:36:41,166 On the other hand, if it works, 610 00:36:41,250 --> 00:36:44,583 I'll then build a streamlined, articulated, slim, 611 00:36:44,667 --> 00:36:48,667 lightweight version that researchers and divers will be able to utilize. 612 00:36:54,709 --> 00:36:56,875 [narrator] Back at sea in the Bahamas, 613 00:36:56,959 --> 00:37:00,375 Jeremiah prepares for the ultimate showdown. 614 00:37:00,458 --> 00:37:02,625 [Jeremiah] I'm going to climb into my gear here, boys. 615 00:37:02,709 --> 00:37:07,250 [narrator] Jeremiah covers his wetsuit with his next generation chainmail, 616 00:37:07,333 --> 00:37:11,625 in case the tiger's shark's teeth break through the new armor. 617 00:37:20,250 --> 00:37:23,166 Shark suits are not for the days that things go well, 618 00:37:23,250 --> 00:37:24,667 it's for the days that things go wrong. 619 00:37:26,125 --> 00:37:28,250 [man] All right, it's clean all the way around. 620 00:37:36,333 --> 00:37:39,000 All right... coming down to you guys to get the armor. 621 00:37:41,750 --> 00:37:45,208 [narrator] Conditions in the water are favorable, visibility is good 622 00:37:45,291 --> 00:37:46,834 and there's a steady current. 623 00:37:50,333 --> 00:37:52,375 [Jeremiah] Looks like we got a lively bunch down here. 624 00:37:55,083 --> 00:37:57,125 I'm ready to get geared up. 625 00:38:04,792 --> 00:38:08,667 [narrator] Jeremiah slips the prototyped armored sleeve over his chainmail. 626 00:38:10,208 --> 00:38:12,166 [Joe] Are you ready, Jeremiah? 627 00:38:12,250 --> 00:38:14,625 [Jeremiah] Yep, let me get in position. 628 00:38:14,709 --> 00:38:16,792 [narrator] And braces for impact. 629 00:38:26,000 --> 00:38:28,000 [man] Watch it... we've got a hammerhead coming in. 630 00:38:36,375 --> 00:38:37,917 It's got a hold of it. 631 00:38:46,917 --> 00:38:50,834 Perfect... not even a scratch. 632 00:38:50,917 --> 00:38:56,875 [narrator] Jeremiah's arm remains intact after its unexpected hammerhead encounter. 633 00:38:56,959 --> 00:38:59,208 But the real test will be against 634 00:38:59,291 --> 00:39:02,291 the turtle crushing jaws of a tiger shark, 635 00:39:02,875 --> 00:39:05,417 and here comes one now. 636 00:39:05,500 --> 00:39:08,500 [Jeremiah] Everybody get ready... in case this doesn't go well. 637 00:39:21,542 --> 00:39:25,542 [narrator] Beneath the serene surface of these turquoise waters, 638 00:39:25,625 --> 00:39:31,166 a dangerous test of man versus shark has begun. 639 00:39:32,625 --> 00:39:36,417 Jeremiah Sullivan's dream is to build a shark-proof suit that will put 640 00:39:36,500 --> 00:39:38,166 marine scientists like himself 641 00:39:38,250 --> 00:39:41,583 face-to-face with the massive sharks they study. 642 00:39:41,667 --> 00:39:43,417 [Jeremiah] That was a close one. 643 00:39:43,500 --> 00:39:45,458 [narrator] And he's doing something never attempted: 644 00:39:45,542 --> 00:39:50,041 intentionally provoking a massive tiger shark to attack him... 645 00:39:50,375 --> 00:39:52,834 Yup. Let me get into position. 646 00:39:52,917 --> 00:39:55,834 [narrator] And hope it bites only where he wants it to. 647 00:39:55,917 --> 00:39:56,917 [Jeremiah] It's got a hold of it. 648 00:39:57,000 --> 00:39:58,667 [narrator] He's already survived 649 00:39:58,750 --> 00:40:01,834 an unexpected attack by a powerful hammerhead. 650 00:40:01,917 --> 00:40:03,709 [Jeremiah] Not even a scratch. 651 00:40:03,792 --> 00:40:08,041 [narrator] Now, after 40 years of experience and experimentation, 652 00:40:08,125 --> 00:40:11,834 Jeremiah braces for the ultimate showdown. 653 00:40:11,917 --> 00:40:14,750 [Jeremiah] Tiger shark coming straight in. 654 00:40:14,834 --> 00:40:17,834 Everybody get ready... in case this doesn't go well. 655 00:40:19,667 --> 00:40:21,417 I'm going for it. 656 00:40:31,667 --> 00:40:32,834 [Jeremiah] Wow! 657 00:40:34,375 --> 00:40:35,875 [Joe] Jeremiah, wow! 658 00:40:35,959 --> 00:40:36,959 You okay? 659 00:40:40,917 --> 00:40:42,792 [Jeremiah] Wow! 660 00:40:42,875 --> 00:40:44,959 [Joe] That was awesome! 661 00:40:45,041 --> 00:40:48,250 [Jeremiah] The power behind that big girl was extraordinary... 662 00:40:48,667 --> 00:40:52,417 but the armor worked exactly as expected, 663 00:40:52,500 --> 00:40:55,291 [narrator] Jeremiah's armor has successfully protected him 664 00:40:55,375 --> 00:40:57,166 from a devastating bite. 665 00:40:57,458 --> 00:40:59,083 [Joe] You did it! 666 00:40:59,166 --> 00:41:02,083 [narrator] But he can't celebrate just yet. 667 00:41:02,166 --> 00:41:04,542 [Jeremiah] Look out... there's another one coming in. 668 00:41:05,125 --> 00:41:06,166 She's a big one. 669 00:41:06,834 --> 00:41:08,709 I got this. Let's go. 670 00:41:08,792 --> 00:41:10,834 Woah! 671 00:41:10,917 --> 00:41:14,792 [narrator] Without warning, a massive, 14-foot tiger takes hold, 672 00:41:14,875 --> 00:41:16,458 and refuses to let go! 673 00:41:20,875 --> 00:41:23,542 [Jeremiah] Wow! Look at the force on that. 674 00:41:23,625 --> 00:41:25,041 Look at this... 675 00:41:25,125 --> 00:41:29,125 Just some minor dings and scratches. Teeth mark... here 676 00:41:29,208 --> 00:41:31,250 and here. 677 00:41:31,333 --> 00:41:33,583 Yeah, but this material is holding up. 678 00:41:34,250 --> 00:41:35,834 [Joe] Hey, Iron man... 679 00:41:35,917 --> 00:41:37,208 you up for one more? 680 00:41:37,750 --> 00:41:39,834 [Jeremiah] You bet! 681 00:41:39,917 --> 00:41:42,333 [narrator] Jeremiah braces for another bite. 682 00:41:42,417 --> 00:41:44,875 [Jeremiah] Here we go. 683 00:41:44,959 --> 00:41:48,166 [narrator] To ensure his armor can withstand multiple attacks. 684 00:41:53,625 --> 00:41:55,500 [Jeremiah] Wow! 685 00:42:06,917 --> 00:42:09,458 [Joe] Well, I think we can call your mission a success. 686 00:42:09,542 --> 00:42:11,834 [Jeremiah] Outstanding. Let's head up. 687 00:42:13,291 --> 00:42:16,792 [narrator] Jeremiah is eager to inspect his prototype, 688 00:42:18,166 --> 00:42:22,792 and assess the damage inflicted by the relentless punishment. 689 00:42:22,875 --> 00:42:24,417 [Joe] Well, that definitely seemed to work. 690 00:42:24,500 --> 00:42:26,875 Yeah, they were hitting it quite hard. You can see the marks here. 691 00:42:26,959 --> 00:42:30,333 -You can see the scratches. -[Joe] I mean, this is like, nothing. 692 00:42:30,417 --> 00:42:32,291 -Yeah, yeah, yeah. -There's barely a scratch there. 693 00:42:33,250 --> 00:42:37,166 [Joe] When they bit onto the subject, what was it like? 694 00:42:37,250 --> 00:42:40,166 I could feel the tension that the teeth placed when 695 00:42:40,250 --> 00:42:41,375 they get a hold of something. 696 00:42:42,166 --> 00:42:44,000 [Joe] They gave you a couple of shakes back and forth 697 00:42:44,083 --> 00:42:46,041 and you didn't see any damage to this. 698 00:42:46,125 --> 00:42:47,333 [Jeremiah] Yeah, yeah. 699 00:42:47,417 --> 00:42:50,750 You know often people talk about things like this as science fiction. 700 00:42:51,500 --> 00:42:55,959 But after these series of experiments, now this is science fact. 701 00:42:57,000 --> 00:43:00,917 [narrator] Jeremiah has successfully taken the groundbreaking first step 702 00:43:01,000 --> 00:43:05,166 toward creating a flexible, full-body suit of shark armor. 703 00:43:06,083 --> 00:43:07,667 [Joe] So this is it? This is what you are going to do? 704 00:43:07,750 --> 00:43:09,875 Well, this is the direction that we are headed, 705 00:43:09,959 --> 00:43:12,291 sort of along these lines. 706 00:43:12,375 --> 00:43:15,000 Similar to some of the lightweight modern armor 707 00:43:15,083 --> 00:43:16,792 used by the military today, 708 00:43:16,875 --> 00:43:20,166 my new suit will be a full body, articulated exoskeleton. 709 00:43:20,250 --> 00:43:22,375 It'll be made of armor plating, 710 00:43:22,458 --> 00:43:25,875 that is lightweight, articulated, bite proof, 711 00:43:25,959 --> 00:43:28,917 and far more durable than anything else that I've built before. 712 00:43:31,250 --> 00:43:32,208 Wow! 713 00:43:32,291 --> 00:43:34,500 [narrator] Jeremiah Sullivan's lifelong dream 714 00:43:34,583 --> 00:43:39,458 of eliminating the barriers between man and shark can become a reality. 715 00:43:43,083 --> 00:43:46,333 [Jeremiah] The applications for this type of armor are virtually endless. 716 00:43:46,417 --> 00:43:48,542 Researchers can now enter conditions 717 00:43:48,625 --> 00:43:50,792 that would typically be considered very unsafe. 718 00:43:50,875 --> 00:43:53,959 Murky water, predation grounds, you name it. 719 00:43:54,041 --> 00:43:55,667 Because of that, 720 00:43:55,750 --> 00:43:59,291 I'm sure there will be many new breakthroughs in shark science. 721 00:43:59,375 --> 00:44:02,166 We'll have the tools that we need to explore the unknown, 722 00:44:04,583 --> 00:44:06,333 and come out alive.