1 00:00:06,965 --> 00:00:08,216 WILL: When I was a kid, 2 00:00:08,633 --> 00:00:12,095 my grandmother used to say all the best things in life 3 00:00:12,178 --> 00:00:14,055 lived on the other side of fear. 4 00:00:14,931 --> 00:00:16,516 I sure hope Gigi was right. 5 00:01:05,982 --> 00:01:07,776 (INDISTINCT CHATTER) 6 00:01:08,610 --> 00:01:09,819 DIVA: Will, welcome aboard. 7 00:01:10,111 --> 00:01:13,031 -Diva! How are you? How are you? -I'm good! 8 00:01:13,740 --> 00:01:15,033 You're just in time. 9 00:01:18,161 --> 00:01:21,498 -That is fantastic. -Yeah, this is the Nadir. 10 00:01:21,623 --> 00:01:24,084 And she's gonna be our vessel into the depths. 11 00:01:24,167 --> 00:01:25,627 -"The Nadir"? -Nadir. 12 00:01:29,130 --> 00:01:30,173 What do you think? 13 00:01:30,673 --> 00:01:34,427 That's straight off a movie set. That's science fiction. 14 00:01:36,596 --> 00:01:39,891 We're going down to the bottom of the ocean in this thing. 15 00:01:43,812 --> 00:01:45,396 I'm gonna be honest, I'm a little nervous, 16 00:01:45,480 --> 00:01:47,023 'cause that submersible is just a... 17 00:01:47,148 --> 00:01:51,027 it's just a little... it's a little ass... it's a little ass thing, 18 00:01:51,152 --> 00:01:52,654 and there's gonna be three people in there. 19 00:01:53,863 --> 00:01:55,198 This is tricky... 20 00:01:55,615 --> 00:02:00,745 because in the real world, I'm frightened of water. 21 00:02:05,500 --> 00:02:06,668 Watch your head. 22 00:02:06,793 --> 00:02:08,962 -You have another wall. Watch your head. -Absolutely. 23 00:02:09,212 --> 00:02:10,797 So, this is a biggie. 24 00:02:11,714 --> 00:02:15,969 Three thousand feet down in a plastic bubble. 25 00:02:16,052 --> 00:02:17,178 -MAN: Up the steps. -Up the steps. 26 00:02:17,262 --> 00:02:19,055 Face the front of the sub, sit here. 27 00:02:19,222 --> 00:02:20,974 -Yeah. -You're aimin' for the center console. 28 00:02:21,057 --> 00:02:23,143 It's near the lamp. And pop your feet in. 29 00:02:23,434 --> 00:02:26,729 Right here, Will. Slide on in. Yeah! 30 00:02:26,855 --> 00:02:29,023 -And then I'll get you to stand on there. -WILL: Yeah. 31 00:02:29,107 --> 00:02:30,191 That's it. 32 00:02:30,275 --> 00:02:31,943 -And then you're gonna sit on that one. -WILL: Ooh. 33 00:02:32,026 --> 00:02:33,236 -MAN: There you go. -(GRUNTS) 34 00:02:33,403 --> 00:02:35,321 -MAN: Squeeze on in. -(GRUNTS) 35 00:02:37,115 --> 00:02:39,117 -Wow. -There's a water bottle. 36 00:02:39,200 --> 00:02:41,870 -The water bottle. -And some more snacks. 37 00:02:41,953 --> 00:02:44,789 -I'll put your snacks down. -This is, uh, snug. 38 00:02:45,665 --> 00:02:46,749 MAN: Diva's next. 39 00:02:47,500 --> 00:02:48,835 I'm coming. 40 00:02:53,173 --> 00:02:55,383 -So, she's like a gazelle. -(MAN LAUGHING) 41 00:02:55,466 --> 00:02:58,845 WILL: Or should it be a sardine, just squeezing into the can. 42 00:02:59,387 --> 00:03:01,181 -She knows what's she's doing. -DIVA: Done this a bit. 43 00:03:02,724 --> 00:03:04,976 All right, I'm gonna give you a quick safety brief. 44 00:03:05,727 --> 00:03:08,146 Both of you have a built-in breathing system. 45 00:03:08,271 --> 00:03:10,523 If you need to, it's just a standard scuba rig. 46 00:03:10,607 --> 00:03:12,609 -If I let... Yeah, if I tell you to... -So, we go like that? Boom. 47 00:03:12,692 --> 00:03:14,277 ...just pop it in your mouth, then breathe normally. 48 00:03:14,360 --> 00:03:15,361 Okay. Mm-hmm. 49 00:03:15,486 --> 00:03:18,114 And if something happens to me, there's a button under here. 50 00:03:18,198 --> 00:03:19,324 -Okay. -All right? 51 00:03:19,407 --> 00:03:20,450 -Yellow. -Yellow button. 52 00:03:20,533 --> 00:03:21,701 -The yellow button. -Right there. 53 00:03:21,826 --> 00:03:23,578 -Press the tool, and... -Oh, Jesus. 54 00:03:23,786 --> 00:03:27,457 -(LAUGHS) -I've broken it already. Mayday, sorry. 55 00:03:27,916 --> 00:03:29,709 Press the tool, and let them know, 56 00:03:29,792 --> 00:03:31,336 -"X-ray, X-ray, X-ray." -Okay. 57 00:03:31,920 --> 00:03:33,296 MAN: Okay, any questions? 58 00:03:33,880 --> 00:03:35,715 Have you ever crashed one of these things into something? 59 00:03:35,798 --> 00:03:37,884 -Oh, yeah. All the time. Oh, yeah. -All the time. Yeah, great. 60 00:03:42,096 --> 00:03:43,681 -Are you actually nervous? -Huh? 61 00:03:43,932 --> 00:03:46,517 -DIVA: Are you actually nervous? -Just a little bit. It'll be fine, though. 62 00:03:51,981 --> 00:03:53,358 (INDISTINCT CHATTER OVER RADIO) 63 00:03:53,483 --> 00:03:55,610 MAN: Echo, Nadir, we are ready for the water. 64 00:03:55,777 --> 00:03:56,986 Ready for water. 65 00:04:01,866 --> 00:04:03,117 (INHALES DEEPLY) 66 00:04:06,746 --> 00:04:08,581 (SUBMERSIBLE ENGINE WHIRRING) 67 00:04:12,752 --> 00:04:15,797 See y'all later... I hope. 68 00:04:26,224 --> 00:04:27,475 Little bit of tingle. 69 00:04:37,151 --> 00:04:38,278 MAN: Here you go. 70 00:04:43,533 --> 00:04:45,660 TOBY: Echo, bridge, you are clear to launch. Clear to launch. 71 00:04:45,910 --> 00:04:49,622 Roger, clear to launch. Break. All positions are lifting now. 72 00:05:00,133 --> 00:05:01,426 And lift off. 73 00:05:01,509 --> 00:05:02,969 -Hey. -Boom. Hey. 74 00:05:03,052 --> 00:05:04,137 DIVA: Here we go. 75 00:05:15,273 --> 00:05:16,983 WILL: I definitely just got nervous. 76 00:05:29,537 --> 00:05:31,789 (CHUCKLES) Whoa. 77 00:05:37,712 --> 00:05:39,630 MAN: If your feet get wet, please tell me. 78 00:05:39,797 --> 00:05:42,508 -That would be terrible! Man. -(BOTH LAUGHING) 79 00:05:59,817 --> 00:06:01,611 And we are detached. 80 00:06:03,738 --> 00:06:07,700 Not emotionally. Emotionally, I'm still very attached. 81 00:06:53,871 --> 00:06:59,502 TOBY: Control, control, Nadir. Vent secure, life support running. Over. 82 00:07:00,128 --> 00:07:04,006 Nadir, control. Roger. Surpassing five-zero meters. Descending. 83 00:07:13,683 --> 00:07:17,770 DIVA: Some of my earliest memories actually revolve around the ocean. 84 00:07:19,522 --> 00:07:22,859 We'd be out on the boat, and I would desperately, 85 00:07:22,942 --> 00:07:26,529 absolutely desperately want to know what was down there. 86 00:07:28,614 --> 00:07:30,741 But I'm not sure Will feels that way. 87 00:07:37,373 --> 00:07:39,250 The circle of light above us is shrinking. 88 00:07:39,333 --> 00:07:40,543 MAN: Yeah, absolutely. 89 00:07:45,715 --> 00:07:50,094 WILL: One thousand meters, 3,300 feet. 90 00:07:50,928 --> 00:07:54,807 A place so deep, not even light gets down there. 91 00:07:58,436 --> 00:08:02,106 But what exists in total darkness? 92 00:08:07,069 --> 00:08:08,237 (BIRDS CHIRPING) 93 00:08:08,488 --> 00:08:11,032 WILL: Back on the surface, other members of our team 94 00:08:11,199 --> 00:08:13,117 are asking the same question. 95 00:08:24,337 --> 00:08:26,422 MELISSA: There are a lot of people who are afraid of the dark. 96 00:08:29,467 --> 00:08:30,468 And I'm one of them. 97 00:08:38,518 --> 00:08:42,855 I got bitten and dragged by an American crocodile in the dark, 98 00:08:42,939 --> 00:08:45,775 and it's kinda made me a little bit wary. 99 00:08:47,109 --> 00:08:51,030 WILL: But not wary enough to stop her canoeing at night 100 00:08:51,113 --> 00:08:52,573 in a glass-bottom boat. 101 00:08:57,995 --> 00:09:00,623 MELISSA: Part of being an explorer is overcoming your fears, 102 00:09:00,706 --> 00:09:02,500 and when you do that... 103 00:09:05,336 --> 00:09:07,380 that's when you get to see the magic. 104 00:09:10,967 --> 00:09:12,051 (SHRIEKS) 105 00:09:19,725 --> 00:09:20,977 We have life. 106 00:09:27,775 --> 00:09:30,361 This water is full of tiny creatures. 107 00:09:31,195 --> 00:09:33,906 Disturb them, and they burst into sudden light. 108 00:09:35,950 --> 00:09:38,286 You row through them, and you create a light storm. 109 00:09:49,922 --> 00:09:50,965 (LAUGHS) 110 00:09:52,216 --> 00:09:54,135 We think it might be a defense. 111 00:09:55,136 --> 00:09:58,014 Like turning on a security light to reveal intruders. 112 00:09:59,807 --> 00:10:01,142 Oh, look at that. 113 00:10:02,018 --> 00:10:03,060 Wow. 114 00:10:05,438 --> 00:10:08,858 Any movement in the water picks up a glow, even these fish. 115 00:10:17,783 --> 00:10:19,744 Here, sharky, sharky. 116 00:10:28,044 --> 00:10:29,920 Oh, yeah! That is a nurse shark. 117 00:10:30,338 --> 00:10:32,923 That's gorgeous. Look at his tailbeats. 118 00:10:37,178 --> 00:10:39,055 This world is far from dark. 119 00:10:40,848 --> 00:10:44,226 Its constellations, its stars swirling underneath your fingers 120 00:10:44,310 --> 00:10:45,811 and underneath your paddles. 121 00:10:54,695 --> 00:10:58,032 It's the most beautiful thing I've ever seen. 122 00:11:01,535 --> 00:11:04,330 A magical world that you'd never experience 123 00:11:04,413 --> 00:11:06,374 if you stuck to the safety of the day. 124 00:11:11,337 --> 00:11:12,463 (GIGGLES) 125 00:11:20,471 --> 00:11:23,265 WILL: So, we're losing light as we go down. 126 00:11:24,392 --> 00:11:26,727 And with that, the colors. 127 00:11:26,852 --> 00:11:30,272 DIVA: Exactly, so, white light is made of lots of colors. 128 00:11:30,648 --> 00:11:33,859 And as it hits the water, different colors 129 00:11:33,943 --> 00:11:35,611 get absorbed before others. 130 00:11:35,820 --> 00:11:37,113 ROYGBIV. 131 00:11:38,739 --> 00:11:42,159 That's how my grandmother taught me the rainbow. ROYGBIV. 132 00:11:42,326 --> 00:11:44,787 -(LAUGHS) -WILL: So, you know, red, orange, yellow, 133 00:11:44,954 --> 00:11:49,291 green, blue, indigo, violet. Got it. So, red goes, orange goes, 134 00:11:49,375 --> 00:11:50,543 -yellow goes... -Exactly. 135 00:11:50,668 --> 00:11:54,880 So, it's like blue is the last to go, and that's why everything looks blue 136 00:11:55,005 --> 00:11:56,757 in the ocean. Check your shirt out. 137 00:11:57,717 --> 00:12:01,762 -Wow! -(LAUGHS) 138 00:12:02,805 --> 00:12:05,391 That's crazy. 139 00:12:06,642 --> 00:12:11,480 We were picking wardrobe, and they kept demanding the red shirt. 140 00:12:11,564 --> 00:12:13,858 -They kept demanding... -What did you think it was for? 141 00:12:13,983 --> 00:12:16,110 I... I didn't know, I was like, "I wanna be an explorer, man." 142 00:12:16,235 --> 00:12:17,820 (ALL LAUGH) 143 00:12:20,698 --> 00:12:22,825 DIVA: We're gonna just be in a blue world soon. 144 00:12:24,118 --> 00:12:25,202 -And then, uh... -Wow. 145 00:12:26,495 --> 00:12:27,496 And then... 146 00:12:28,247 --> 00:12:29,373 -A dark world. -Dark world. 147 00:12:34,920 --> 00:12:38,758 We've only just started, and already the light from the surface 148 00:12:38,841 --> 00:12:40,092 is fading. 149 00:12:40,634 --> 00:12:43,721 But before the dark, there's twilight. 150 00:12:44,263 --> 00:12:46,974 (INSECTS CHIRPING) 151 00:12:47,808 --> 00:12:51,479 WILL: A world we think of as having very little color. 152 00:13:03,324 --> 00:13:08,204 CORY: As night falls, the world as we know it totally disappears. 153 00:13:09,246 --> 00:13:10,998 It disintegrates around you. 154 00:13:15,044 --> 00:13:18,297 Our eyes struggle to make out our surroundings. 155 00:13:19,507 --> 00:13:20,633 I can hear it. 156 00:13:21,675 --> 00:13:24,136 I can hear it getting louder. Yeah. 157 00:13:24,428 --> 00:13:26,347 -Garuga... -Garuga is coming. 158 00:13:39,151 --> 00:13:41,278 (WATER RUSHING) 159 00:14:14,603 --> 00:14:18,357 CORY: Sometimes, during a full moon, when the skies are clear... 160 00:14:19,358 --> 00:14:22,111 a ghostly arc of light appears in the mist. 161 00:14:24,405 --> 00:14:25,823 It's a moonbow. 162 00:14:33,038 --> 00:14:37,585 It's nearly impossible to see. It's like this thin, grey line in the air 163 00:14:37,751 --> 00:14:40,629 that's stretching out over the entire gorge. 164 00:14:41,130 --> 00:14:44,300 But with the right camera and the right lens, 165 00:14:44,550 --> 00:14:47,511 you can see the line for what it really is. 166 00:14:50,681 --> 00:14:54,476 It's a rainbow, but it's created by the moonlight. 167 00:14:56,937 --> 00:14:58,480 LIDIO: It's beautiful here, isn't it? 168 00:14:58,939 --> 00:15:00,107 CORY: This is perfect. 169 00:15:15,706 --> 00:15:19,251 The white light is bouncing off water droplets in the air, 170 00:15:19,335 --> 00:15:21,253 just like it does after a rainstorm. 171 00:15:26,133 --> 00:15:30,304 But here's the thing. Moonlight isn't actually strong enough 172 00:15:30,471 --> 00:15:33,015 to activate our color vision. 173 00:15:33,474 --> 00:15:37,102 So, the moonbow remains hidden in plain sight. 174 00:15:38,312 --> 00:15:42,524 It's a world of color that is just completely hidden in darkness. 175 00:15:49,114 --> 00:15:51,784 WILL: The ocean has twilight, too. 176 00:15:52,451 --> 00:15:54,370 Go down below 200 meters, 177 00:15:54,453 --> 00:15:57,122 and you're getting beyond the reach of sunlight. 178 00:15:57,873 --> 00:16:02,461 And the twilight zone is full of things no one has ever seen before. 179 00:16:07,549 --> 00:16:14,181 MAN: Control, control, Nadir. Depth, 700 meters, descending. Over. 180 00:16:15,474 --> 00:16:17,935 -(SUBMERSIBLE CLUNKING) -MAN: Did you hear that clunk then? 181 00:16:18,060 --> 00:16:19,770 -WILL: Yes, I did. -MAN: That's the sphere telling us 182 00:16:19,895 --> 00:16:21,146 -we're getting deep. -WILL: Yeah. 183 00:16:21,522 --> 00:16:22,856 (DIVA GASPS) 184 00:16:26,193 --> 00:16:28,362 -Okay, shall we do some exploring? -WILL: All right. 185 00:16:29,279 --> 00:16:30,280 I guess. 186 00:16:37,454 --> 00:16:40,207 WILL: This feels just like Star Wars. 187 00:16:40,749 --> 00:16:42,710 I keep expecting to see the Death Star. 188 00:16:42,793 --> 00:16:44,086 -(DIVA LAUGHING) -(MAN LAUGHING) 189 00:16:46,547 --> 00:16:49,967 -WILL: Do you ever get used to this? -DIVA: Not really. 190 00:16:53,303 --> 00:16:55,931 Can you believe that more people have been into space 191 00:16:56,015 --> 00:16:57,891 than the bottom of the ocean? 192 00:16:58,434 --> 00:17:03,272 I've only been down a handful of times because these trips are just so rare. 193 00:17:05,232 --> 00:17:08,152 Less than one percent of the deep ocean has been explored. 194 00:17:09,403 --> 00:17:12,364 And even though you're traveling deeper into the darkness, 195 00:17:12,614 --> 00:17:14,491 you actually start to see more. 196 00:17:18,120 --> 00:17:19,163 Whoa. 197 00:17:19,997 --> 00:17:22,750 -DIVA: What? -WILL: Wow. 198 00:17:24,084 --> 00:17:25,627 Well, that just came out of nowhere. 199 00:17:26,837 --> 00:17:29,423 That is a whole cliff. 200 00:17:36,013 --> 00:17:38,098 -That's amazing. -DIVA: Isn't it? 201 00:17:40,392 --> 00:17:42,644 WILL: Maybe it is the Death Star. 202 00:17:46,356 --> 00:17:49,318 -DIVA: We have no idea how tall this is. -Right. 203 00:17:49,401 --> 00:17:51,487 -DIVA: How far this goes, right? -WILL: Yes, yes. Absolutely. 204 00:17:52,613 --> 00:17:55,657 DIVA: And before now, no one has been here. 205 00:17:56,116 --> 00:17:57,117 WILL: Incredible. 206 00:18:05,375 --> 00:18:10,172 So, I could literally be one of the first people to ever see this? 207 00:18:10,255 --> 00:18:11,256 DIVA: You could. 208 00:18:13,592 --> 00:18:16,595 WILL: Wait, aren't the explorer rules that I get to name it? 209 00:18:16,678 --> 00:18:19,139 -DIVA: Yeah. -WILL: The Fresh Peak. 210 00:18:19,306 --> 00:18:22,184 (ALL LAUGH) 211 00:18:25,896 --> 00:18:27,231 WILL: What is that? 212 00:18:28,273 --> 00:18:32,152 Enypniastes, enypniastes, enypniastes. Go back, go back, go back. 213 00:18:34,696 --> 00:18:36,698 WILL: It's weird as hell. 214 00:18:39,660 --> 00:18:44,248 Okay, this is a type of sea cucumber. Formal name, Enypniastes eximia. 215 00:18:44,373 --> 00:18:47,376 -But it has a bunch of nicknames. -Mm-hmm. 216 00:18:47,543 --> 00:18:50,587 DIVA: My personal favorite is the headless chicken monster. 217 00:18:50,712 --> 00:18:53,507 The headless chicken. Wow! Look at that. 218 00:18:56,260 --> 00:18:59,888 It really does look like a roast chicken... 219 00:19:01,140 --> 00:19:05,352 -that ate a giant Philly pretzel. -(DIVA LAUGHING) 220 00:19:09,648 --> 00:19:11,567 They're just one of my favorite things to see. 221 00:19:12,234 --> 00:19:13,569 That is beautiful. 222 00:19:14,361 --> 00:19:18,615 You can see that it's red, probably the most common color 223 00:19:18,740 --> 00:19:20,284 of animals in the deep sea. 224 00:19:20,659 --> 00:19:22,119 -WILL: Wow! -DIVA: Why do you think that is? 225 00:19:22,619 --> 00:19:24,663 WILL: That's a good question. I don't know... Oh! 226 00:19:24,997 --> 00:19:27,374 It would probably be for concealment, right? 227 00:19:27,708 --> 00:19:29,960 -Yeah. They can hide. Yes, yes. -Exactly! 228 00:19:30,335 --> 00:19:32,087 -'Cause there's no red light. -WILL: There's no red... They... 229 00:19:32,254 --> 00:19:33,881 -DIVA: You can't see them. -WILL: You can't see 'em. 230 00:19:33,964 --> 00:19:35,716 DIVA: So, it's like they're wearing an invisibility cloak. 231 00:19:36,216 --> 00:19:40,137 WILL: Oh, they act like my T-shirt, right? That's my invisibility cloak. 232 00:19:40,220 --> 00:19:41,305 DIVA: Exactly. 233 00:19:43,640 --> 00:19:46,560 Most of the creatures down here can't even see red. 234 00:19:48,812 --> 00:19:51,982 WILL: Yeah, I guess, they don't need to in a blue world. 235 00:19:55,944 --> 00:19:58,530 So, is everything down here red? 236 00:19:59,072 --> 00:20:01,450 -MAN: There's a jellyfish right here. -Yeah? 237 00:20:01,533 --> 00:20:02,910 -Right in front of us. -MAN: There. 238 00:20:02,993 --> 00:20:04,494 Whoo! 239 00:20:04,578 --> 00:20:06,872 DIVA: You'll see it's moving. They'll all... Where the rainbow is. 240 00:20:06,955 --> 00:20:08,624 -Yes! Wow! -DIVA: Yeah! 241 00:20:08,707 --> 00:20:09,708 (DIVA LAUGHING) 242 00:20:11,418 --> 00:20:13,337 That's amazing. Use your phone? 243 00:20:20,802 --> 00:20:24,306 It's like a five-color light bulb in the middle of it. 244 00:20:27,226 --> 00:20:30,145 -DIVA: That jelly actually has no color. -WILL: What do you mean? 245 00:20:30,229 --> 00:20:32,940 DIVA: It only looks colorful because we are shining a light on it. 246 00:20:33,190 --> 00:20:34,691 WILL: What do you... what's that mean? 247 00:20:34,858 --> 00:20:38,528 That rainbow is never seen down here. 248 00:20:38,695 --> 00:20:41,740 -Because we have brought that white light. -Right. Right. Right. 249 00:20:41,823 --> 00:20:45,077 DIVA: And so, that is actually not a real thing. 250 00:20:45,369 --> 00:20:48,205 -Like, no animal down here sees that. -WILL: Right. No animal sees it like that. 251 00:20:48,288 --> 00:20:49,498 Exactly. 252 00:21:01,927 --> 00:21:06,598 WILL: Even though I can see this rainbow, the creatures down here can't. 253 00:21:08,850 --> 00:21:12,271 And I can only see it because we brought the right sort of light. 254 00:21:15,440 --> 00:21:19,111 That approach can work in all sorts of surprising ways. 255 00:21:19,361 --> 00:21:21,154 (INSECTS CHIRPING) 256 00:21:22,572 --> 00:21:25,158 WILL: And it turns out, you don't have to go that far 257 00:21:25,242 --> 00:21:27,327 to find hidden colors in the dark... 258 00:21:28,328 --> 00:21:31,081 just as long as you have the right sort of light. 259 00:21:53,520 --> 00:21:54,938 (BIRD SCREECHING IN DISTANCE) 260 00:21:55,731 --> 00:21:57,107 I heard something. 261 00:21:57,691 --> 00:21:58,942 They're right down here. 262 00:22:02,029 --> 00:22:03,864 I think they know we're here. 263 00:22:10,746 --> 00:22:12,831 -Why don't we go dark? -GEORGE: Okay. 264 00:22:22,341 --> 00:22:23,925 Can you try the magic light? 265 00:22:27,596 --> 00:22:29,848 Oh, oh. Yeah, there's movement right there. 266 00:22:31,808 --> 00:22:33,393 -That's it. -(CHUCKLES) 267 00:22:33,560 --> 00:22:37,731 -It's like it's disco paint. -It is. It's amazing, isn't it? 268 00:22:50,369 --> 00:22:52,996 GEORGE: Only a handful of people in the world have ever seen this. 269 00:22:58,001 --> 00:23:01,338 JONATHAN: It's amazing, how a little trick like this with UV light 270 00:23:01,505 --> 00:23:03,840 can just reveal a whole new world. Who knew? 271 00:23:03,924 --> 00:23:06,301 GEORGE: (LAUGHING) Yeah. 272 00:23:06,385 --> 00:23:11,431 WILL: And that's the thing. No one knew. This is brand-new science. 273 00:23:11,932 --> 00:23:16,061 As we speak, scientists are wandering randomly around 274 00:23:16,144 --> 00:23:20,273 with UV flashlights trying to see what other animals 275 00:23:20,357 --> 00:23:22,150 might have this hidden power. 276 00:23:23,318 --> 00:23:25,487 When you first saw this, you must've thought you were, like, 277 00:23:25,570 --> 00:23:26,905 hallucinating or something. 278 00:23:28,198 --> 00:23:32,160 -My sanity was questioned, yes. -GEORGE: (LAUGHING) Not the first time. 279 00:23:35,414 --> 00:23:38,792 WILL: Who knew that animals were putting on a secret light show 280 00:23:39,042 --> 00:23:41,044 -in our own backyards... -(CAMERA SHUTTER CLICKS) 281 00:23:42,254 --> 00:23:44,714 ...using colors that we can't see? 282 00:23:45,507 --> 00:23:46,883 -(SQUIRRELS SQUEAKING) -WILL: Amazing. 283 00:23:52,931 --> 00:23:56,601 What we're looking for doesn't need special lights. 284 00:23:58,895 --> 00:24:02,899 But what is left to see when all light is gone? 285 00:24:06,278 --> 00:24:09,322 DIVA: This is where we're probably beginning to go into the midnight zone. 286 00:24:10,907 --> 00:24:12,117 No light. 287 00:24:14,661 --> 00:24:17,956 WILL: To get to the midnight zone, you need to go deep. 288 00:24:18,999 --> 00:24:20,208 Really deep. 289 00:24:20,709 --> 00:24:23,628 Close to the limits of what this sub can handle. 290 00:24:25,422 --> 00:24:27,549 (SUBMERSIBLE CLUNKING) 291 00:24:29,676 --> 00:24:31,553 (SUBMARINE CREAKING) 292 00:24:48,278 --> 00:24:50,280 DIVA: So, as the sub is going deeper, 293 00:24:50,614 --> 00:24:55,660 the most unnerving thing is the noises it makes. This, like, horrible creaking. 294 00:24:56,161 --> 00:25:00,415 And that's the battle between the sub and the ocean. 295 00:25:01,082 --> 00:25:05,337 And it's completely terrifying if you stop for a second 296 00:25:05,462 --> 00:25:08,840 and think about the fact that the only thing protecting you 297 00:25:09,090 --> 00:25:10,926 is about six inches of plastic. 298 00:25:16,014 --> 00:25:17,891 MAN: Toby, I'm gonna start slowing down now. 299 00:25:18,808 --> 00:25:22,229 -TOBY: Nadir, control, roger. -MAN: Here we go. 300 00:25:28,068 --> 00:25:30,570 WILL: Oh. We're at the bottom. 301 00:25:32,197 --> 00:25:34,199 MAN: That's about three inches from the seabed. 302 00:25:35,992 --> 00:25:39,162 WILL: Coming in to land, Houston. (IMITATING RADIO STATIC) Contact light. 303 00:25:39,287 --> 00:25:40,372 (DIVA LAUGHING) 304 00:25:40,497 --> 00:25:42,749 WILL: I always wanted to say that. I just never really had a reason. 305 00:25:42,832 --> 00:25:44,125 (DIVA LAUGHING) 306 00:25:47,546 --> 00:25:50,173 I love this part, when you see the seafloor 307 00:25:50,340 --> 00:25:52,717 just loom out of the depths at you. 308 00:25:55,845 --> 00:25:58,056 It's so surreal when you think about it. 309 00:25:58,181 --> 00:26:02,811 We're here, a kilometer below the ocean surface. 310 00:26:11,570 --> 00:26:14,197 WILL: Personally, for you, what is your life's goal, 311 00:26:14,322 --> 00:26:16,783 your hope for what you're doing? 312 00:26:17,826 --> 00:26:19,869 DIVA: 'Cause I'm from a developing country... 313 00:26:20,036 --> 00:26:22,205 -WILL: Yeah. -...we, as a nation, 314 00:26:22,289 --> 00:26:25,709 can't afford to explore the majority of our area. 315 00:26:25,834 --> 00:26:27,752 -WILL: Wow, wow, wow, wow. -Like, 90-something-percent 316 00:26:27,836 --> 00:26:29,838 of Trinidad's area is deep ocean. 317 00:26:29,963 --> 00:26:33,216 And we have no idea what's... what's there because we don't have the expertise. 318 00:26:33,341 --> 00:26:34,467 I'm the only one. 319 00:26:35,427 --> 00:26:39,764 So, a big part of my work is trying to change that. 320 00:26:40,974 --> 00:26:46,354 I've been on, like, 16 expeditions now, and there is hardly ever anyone 321 00:26:46,438 --> 00:26:49,274 that looks like me, whether it's a woman, a person of color, 322 00:26:49,357 --> 00:26:50,942 or a person from a developing country. 323 00:26:51,568 --> 00:26:53,528 -And I want that to change. -WILL: Absolutely. 324 00:26:53,612 --> 00:26:56,197 DIVA: So, that's a big part of why I do what I do. 325 00:26:56,281 --> 00:26:58,283 WILL: Got it. That's cool. 326 00:27:06,666 --> 00:27:11,463 Inside the sub at 3,300 feet. 327 00:27:12,380 --> 00:27:14,090 -We down here. -(DIVA LAUGHING) 328 00:27:14,257 --> 00:27:16,509 We down here, y'all. We down here. 329 00:27:20,597 --> 00:27:23,350 Let's just say, I got really, really inspired, 330 00:27:23,433 --> 00:27:24,643 and I just wanted to take a walk. 331 00:27:24,768 --> 00:27:27,562 -MAN: Probably last about half a second. -(BOTH LAUGHING) 332 00:27:27,687 --> 00:27:29,856 -DIVA: And we would die in the process. -WILL: Yeah. 333 00:27:29,939 --> 00:27:31,316 I probably won't do that then. 334 00:27:31,441 --> 00:27:32,901 -(DIVA LAUGHING) -(MAN LAUGHING) 335 00:27:33,777 --> 00:27:35,695 DIVA: I always think, "What a great way to go. 336 00:27:36,112 --> 00:27:37,238 "What a great story." 337 00:27:37,864 --> 00:27:39,991 WILL: A great story is one that you get to tell. 338 00:27:40,116 --> 00:27:41,868 -Somebody else... -MAN: Right, yeah. 339 00:27:41,951 --> 00:27:44,788 If somebody else has to tell it, "Yeah, man, I was there that day," 340 00:27:44,913 --> 00:27:46,581 it's like a less great story. 341 00:27:46,831 --> 00:27:48,333 (ALL LAUGHING) 342 00:27:55,590 --> 00:27:58,301 WILL: If the pressure is that extreme, 343 00:27:58,927 --> 00:28:02,430 you've gotta wonder, "What kinda creature could live down here?" 344 00:28:04,099 --> 00:28:07,560 Because even back on the surface, explorers are finding 345 00:28:07,644 --> 00:28:11,398 some crazy, strange lifeforms hiding in the dark. 346 00:28:17,904 --> 00:28:21,741 (BIRDS CHIRPING) 347 00:28:28,164 --> 00:28:30,250 (WATER DRIPPING) 348 00:28:34,629 --> 00:28:37,549 ALEXANDER: What is an astronaut doing in a cave... 349 00:28:41,344 --> 00:28:45,640 300 meters below the earth's surface in utter darkness? 350 00:28:50,437 --> 00:28:56,151 Going into a cave is very, very similar to actually going to space. 351 00:29:21,384 --> 00:29:25,597 You lose colors, and then you lose the concept of colors. 352 00:29:29,434 --> 00:29:32,687 If you look around, most creatures that live down here 353 00:29:32,771 --> 00:29:34,022 are white or transparent. 354 00:29:43,823 --> 00:29:45,825 They have adapted to living in a cave, 355 00:29:45,909 --> 00:29:48,995 so they got rid of colors, they got rid of eyes, even, totally. 356 00:29:50,121 --> 00:29:52,081 These creatures, they don't even see. 357 00:30:01,633 --> 00:30:03,718 WILL: An olm looks like the kind of creature 358 00:30:03,802 --> 00:30:05,762 an astronaut might find. 359 00:30:11,559 --> 00:30:14,312 That weird, fleshy skin. 360 00:30:16,898 --> 00:30:19,943 They call olms the human fish. 361 00:30:27,992 --> 00:30:32,664 An alien that only needs to eat every ten years. 362 00:30:37,669 --> 00:30:39,546 Which is just as well 363 00:30:39,629 --> 00:30:42,257 because they move too slowly to catch much. 364 00:30:46,052 --> 00:30:48,972 A species that has been hidden away in the dark 365 00:30:49,055 --> 00:30:51,850 for over 20 million years. 366 00:30:53,268 --> 00:30:54,519 (GULPS) 367 00:31:06,155 --> 00:31:10,743 WILL: If they found that thing in a cave just a few hundred feet down, 368 00:31:11,452 --> 00:31:15,748 what the hell are we gonna find at 3,000 feet below the sea? 369 00:31:18,751 --> 00:31:21,045 -(SUBMERSIBLE ENGINE WHIRRING) -(SUBMERSIBLE CLUNKING) 370 00:31:23,631 --> 00:31:29,178 MAN: Control. Control. Nadir. Depth, 1,000 meters. Over. 371 00:31:35,685 --> 00:31:36,853 What was that? 372 00:31:38,563 --> 00:31:40,481 DIVA: There's only one way to find out. 373 00:31:41,608 --> 00:31:44,235 MAN: Yes. And there's a trick we play. 374 00:31:47,155 --> 00:31:49,365 (LIGHT SWITCHES FLICKING) 375 00:31:59,250 --> 00:32:00,251 WILL: Okay. 376 00:32:01,169 --> 00:32:03,338 Uh, what now? 377 00:32:04,339 --> 00:32:05,840 DIVA: Now, we'll see what's out there. 378 00:32:10,219 --> 00:32:15,433 MAN: So, shut your eyes. Okay. One, two, three. 379 00:32:16,184 --> 00:32:17,226 (LIGHT SWITCH FLICKING) 380 00:32:19,437 --> 00:32:20,480 MAN: Eyes open. 381 00:32:22,815 --> 00:32:23,858 WILL: Like, nothin'. 382 00:32:24,400 --> 00:32:28,488 MAN: Try it again. Let's turn on the flash. Okay, eyes shut. 383 00:32:31,240 --> 00:32:34,786 -One, two, three. Lights on. -(LIGHT SWITCH FLICKING) 384 00:32:36,079 --> 00:32:38,665 MAN: Lights off. Eyes open. 385 00:32:41,960 --> 00:32:43,753 -DIVA: Wow! Wow! -WILL: Woah! 386 00:32:43,878 --> 00:32:45,672 DIVA: Oh, my God! (LAUGHS) 387 00:32:45,755 --> 00:32:47,173 -WILL: Oh! -DIVA: Wow! 388 00:32:48,341 --> 00:32:50,969 -WILL: Wow! Whoa! -DIVA: Oh, my God. (LAUGHING) 389 00:32:51,469 --> 00:32:55,056 WILL: You have got to be kidding me. Look at that. 390 00:32:55,390 --> 00:32:57,308 (MAN LAUGHING) 391 00:32:57,850 --> 00:33:01,854 WILL: It's like Close Encounters. (HUMMING) 392 00:33:01,980 --> 00:33:04,107 -You know? (LAUGHS) -(BOTH LAUGH) 393 00:33:07,235 --> 00:33:09,153 WILL: So, Diva, what is it? 394 00:33:09,362 --> 00:33:10,989 DIVA: Well, this is what we're here to see. 395 00:33:11,197 --> 00:33:14,575 A hidden world you can only see in total darkness. 396 00:33:14,701 --> 00:33:18,830 WILL: No, no, I know. But, like, act... actually, scientifically, what is it? 397 00:33:19,497 --> 00:33:21,165 DIVA: It's bioluminescence, Will. 398 00:33:22,000 --> 00:33:26,004 It's a chemical reaction using oxygen in the water to create light. 399 00:33:26,170 --> 00:33:27,463 But just look at it. 400 00:33:43,771 --> 00:33:46,190 WILL: So, they're making their own light. 401 00:33:46,441 --> 00:33:49,944 DIVA: Exactly. And they use that light to communicate. 402 00:33:51,988 --> 00:33:55,033 -They are communicating with us, right? -WILL: Mm-hmm. 403 00:33:55,825 --> 00:33:57,702 -Like, "Mother! Mother!" -DIVA: It's like Avatar. Yeah. 404 00:33:57,827 --> 00:33:59,454 (ALL LAUGHING) 405 00:34:00,329 --> 00:34:02,665 WILL: Or, "Yo, man, get them damn lights out my face." 406 00:34:02,749 --> 00:34:04,083 (ALL LAUGHING) 407 00:34:04,167 --> 00:34:05,835 DIVA: Or they're like, "Do I wanna mate with you?" 408 00:34:05,918 --> 00:34:09,005 -I know, yeah. (LAUGHS) -(BOTH LAUGH) 409 00:34:09,922 --> 00:34:14,927 WILL: There's like this whole language I never even knew existed. 410 00:34:15,136 --> 00:34:18,181 Of all the space on the planet in which animals can live... 411 00:34:19,265 --> 00:34:23,186 over 99 percent of it is in the oceans. 412 00:34:24,312 --> 00:34:28,608 And within that huge space, nearly 80 percent of animals 413 00:34:28,691 --> 00:34:32,236 -use bioluminescence in some way. -Wow! 414 00:34:32,695 --> 00:34:38,659 And so, actually, bioluminescence may be one of the most common forms 415 00:34:38,743 --> 00:34:41,079 of communication on the planet. 416 00:34:41,913 --> 00:34:44,540 -WILL: That is mind-blowing. -(DIVA LAUGHING) 417 00:34:46,292 --> 00:34:49,045 WILL: How did I not know that this was in the world? 418 00:34:56,052 --> 00:34:57,386 MAN: Back to the surface. 419 00:34:58,262 --> 00:35:01,224 Control. Control. Nadir. 420 00:35:02,100 --> 00:35:05,561 Passing 400 meters, ascending. Over. 421 00:35:15,905 --> 00:35:17,782 Wow! 422 00:35:23,412 --> 00:35:25,623 -(DIVA CHEERS) -WILL: That's crazy. 423 00:35:25,748 --> 00:35:27,125 (MAN LAUGHING) 424 00:35:28,626 --> 00:35:30,586 -WILL: Love that. -(MAN LAUGHING) 425 00:35:32,088 --> 00:35:35,383 -This is right out of a romantic comedy. -(BOTH LAUGH) 426 00:35:35,591 --> 00:35:40,012 I'm so putting this in a movie. I am so putting this in a movie. 427 00:35:40,096 --> 00:35:42,723 MAN: I was just wondering who you'd put in as me. 428 00:35:43,266 --> 00:35:44,767 -(WILL LAUGHING) -(LAUGHS) 429 00:35:44,934 --> 00:35:47,228 -Oh, you'll be, like, Matt Damon. -MAN: Oh, yeah. Matt Damon. 430 00:35:47,353 --> 00:35:48,938 -You know, somebody like that. -MAN: Yeah. 431 00:35:49,021 --> 00:35:50,022 All right. 432 00:36:05,788 --> 00:36:07,039 MAN: Back to the sunshine. 433 00:36:09,584 --> 00:36:13,462 WILL: We set out to find a hidden world in the depths. 434 00:36:16,549 --> 00:36:21,053 And I discovered that there's more light in the darkness than I ever imagined. 435 00:36:22,221 --> 00:36:24,140 From the deep, dark ocean... 436 00:36:25,391 --> 00:36:28,060 all the way to the sunlit surface... 437 00:36:29,228 --> 00:36:32,231 we live in a world of color. 438 00:36:35,776 --> 00:36:36,944 MAN: Hold on! 439 00:36:37,320 --> 00:36:38,654 Yes, I like this part! 440 00:36:38,821 --> 00:36:42,200 -Yeah! (LAUGHING) -(CHEERS) 441 00:36:43,034 --> 00:36:46,454 -DIVA: Will, you did it. -Yay! 442 00:36:46,913 --> 00:36:47,914 Wow. 443 00:36:49,081 --> 00:36:52,335 -The sun just bursts back into your life. -That was great. 444 00:36:52,460 --> 00:36:53,961 -WILL: Yeah! (LAUGHING) -(LAUGHS) 445 00:36:54,128 --> 00:36:56,130 -That was definitely great. -(INDISTINCT CHATTER OVER RADIO) 446 00:36:58,591 --> 00:37:00,468 WILL: My grandmother used to say, 447 00:37:00,635 --> 00:37:04,680 "God places the best things in life on the other side of fear." 448 00:37:05,556 --> 00:37:10,937 Well, He also puts the brightest things in life on the other side of darkness. 449 00:37:12,897 --> 00:37:17,235 So much so, that I only really began to see... 450 00:37:18,277 --> 00:37:19,737 when I descended... 451 00:37:20,988 --> 00:37:22,198 into the dark. 452 00:37:27,662 --> 00:37:30,289 Another hidden world awaits us. 453 00:37:30,498 --> 00:37:32,416 I fulfill a childhood dream, 454 00:37:32,583 --> 00:37:36,379 to witness one of the greatest migrations on Earth, 455 00:37:37,004 --> 00:37:40,258 and discover that in the world of swarms, 456 00:37:40,383 --> 00:37:44,220 even unintelligent animals can become super smart. 457 00:37:44,929 --> 00:37:46,514 Wow! 458 00:37:49,308 --> 00:37:50,893 (THEME MUSIC PLAYING) 459 00:38:14,041 --> 00:38:16,043 (THEME MUSIC CONCLUDES)