1
00:00:06,214 --> 00:00:08,258
(BEES BUZZING)

2
00:00:08,508 --> 00:00:11,011
(SEAGULLS SQUAWKING)

3
00:00:19,269 --> 00:00:22,355
-WILL: This smells terrible.
-(CHUCKLES) That's the whole point.

4
00:00:22,439 --> 00:00:23,940
(CHUCKLES)

5
00:00:36,411 --> 00:00:39,122
CRISTINA: Hey, Will,
try to put a little muscle into it.

6
00:00:39,247 --> 00:00:41,499
-WILL: All right.
-CRISTINA: Give it a good shake.

7
00:00:41,624 --> 00:00:42,917
(WATER RUNNING)

8
00:00:46,963 --> 00:00:49,257
(SUSPENSEFUL MUSIC PLAYING)

9
00:00:52,343 --> 00:00:55,055
-Yeah, I remember this from <i>Jaws.</i>
-(CRISTINA LAUGHING)

10
00:01:41,434 --> 00:01:44,479
WILL: <i>Tiger sharks usually spend</i>
<i>their lives alone,</i>

11
00:01:44,771 --> 00:01:46,106
<i>wandering the oceans.</i>

12
00:01:47,148 --> 00:01:51,152
<i>But once a year, they mass together</i>
<i>near the Great Barrier Reef,</i>

13
00:01:51,861 --> 00:01:54,155
<i>all heading in one single direction.</i>

14
00:02:01,663 --> 00:02:04,040
-Oh, hey.
-Mm-hmm. You got one.

15
00:02:06,459 --> 00:02:07,794
Come to us, baby.

16
00:02:08,878 --> 00:02:10,171
Quick, quick, quick.

17
00:02:12,006 --> 00:02:14,384
RESEARCHER 1: Pull it right in.
Pull it quick, quick. Pull it right in.

18
00:02:15,301 --> 00:02:16,719
Pull up, pull up. Steady.

19
00:02:17,137 --> 00:02:18,346
Don't let him fight!

20
00:02:19,180 --> 00:02:22,100
Don't let him fight! Don't let go!

21
00:02:23,977 --> 00:02:26,146
(SUSPENSEFUL MUSIC PLAYING)

22
00:02:38,241 --> 00:02:41,494
-RESEARCHER 2: Yeehaw.
-I've got you. Pulling him tight.

23
00:02:42,871 --> 00:02:45,623
-Okay, Will. Hang on to that rope.
-WILL: Yup.

24
00:02:47,834 --> 00:02:51,129
WILL: <i>These Australian researchers</i>
<i>want to track one of the sharks</i>

25
00:02:51,212 --> 00:02:52,630
<i>to find out where they're going.</i>

26
00:02:54,591 --> 00:02:56,593
-RESEARCHER 1: You got her there, Will?
-WILL: I'm on the other side.

27
00:02:57,802 --> 00:02:59,888
Yup. Hold the tail high.

28
00:03:00,597 --> 00:03:01,931
That was good, you're secure.

29
00:03:03,141 --> 00:03:04,434
RESEARCHER 2: Watch those teeth.

30
00:03:10,648 --> 00:03:12,025
Watch that, it's still around your leg.

31
00:03:18,198 --> 00:03:19,282
Come on, get that!

32
00:03:21,826 --> 00:03:23,161
-RESEARCHER 1: Ready?
-RESEARCHER 2: Yup.

33
00:03:23,786 --> 00:03:24,829
RESEARCHER 1: And rolling.

34
00:03:25,872 --> 00:03:28,416
This one's a, uh... (GROANS)

35
00:03:30,919 --> 00:03:32,879
WILL: <i>He's okay, right?</i>
<i>He'll be all right?</i>

36
00:03:33,129 --> 00:03:35,798
RESEARCHER 2: Especially if you start
calling her "she." She'll be much better.

37
00:03:36,174 --> 00:03:37,884
WILL: "She?" All right. (CHUCKLES)

38
00:03:38,259 --> 00:03:40,345
Gotta watch the gender pronouns, sorry.

39
00:03:42,096 --> 00:03:43,973
CRISTINA: <i>They don't use hooks,</i>
<i>so she's not harmed.</i>

40
00:03:46,017 --> 00:03:47,018
How big is it?

41
00:03:50,939 --> 00:03:52,523
-WILL: Yup. Got it.
-What is it?

42
00:03:52,607 --> 00:03:55,068
-WILL: Three point four.
-Which'll be about twelve feet.

43
00:03:55,360 --> 00:03:56,861
-All right.
-Three-four!

44
00:03:57,904 --> 00:03:59,489
WILL: She's magnificent.

45
00:04:12,085 --> 00:04:13,086
WILL: Now what?

46
00:04:13,294 --> 00:04:15,922
RESEARCHER 1: Uh. Well, we're trying
to learn what the sharks are doing here...

47
00:04:16,547 --> 00:04:19,300
'cause we need to know where they go,
what their home ranges are,

48
00:04:19,550 --> 00:04:21,552
and then we can follow it via satellite.

49
00:04:23,263 --> 00:04:25,640
We know from the tiding
that these sharks are coming

50
00:04:25,723 --> 00:04:27,308
from thousands of miles away.

51
00:04:27,934 --> 00:04:30,895
And we know that sharks
follow smells underwater.

52
00:04:31,187 --> 00:04:33,606
So, we know that they're here
because they smell something.

53
00:04:37,652 --> 00:04:41,948
WILL: <i>In nature, smell can mean</i>
<i>the difference between life and death,</i>

54
00:04:42,699 --> 00:04:45,576
<i>particularly,</i>
<i>when you're dealing with sharks.</i>

55
00:04:48,371 --> 00:04:52,125
The question is
where are they going and why?

56
00:05:03,428 --> 00:05:05,054
-(EXHALES)
-RESEARCHER 1: Your first tiger shark.

57
00:05:05,138 --> 00:05:06,014
Yeah, well...

58
00:05:06,597 --> 00:05:08,558
-I'm not gonna need to do that two times.
-RESEARCHER 1: No?

59
00:05:08,641 --> 00:05:10,601
(ALL LAUGH)

60
00:05:13,146 --> 00:05:17,608
WILL: <i>Tiger sharks are so mean</i>
<i>that they eat other sharks.</i>

61
00:05:18,484 --> 00:05:21,279
<i>So, getting into the water</i>
<i>to photograph one?</i>

62
00:05:22,739 --> 00:05:23,781
<i>That's next level.</i>

63
00:05:25,783 --> 00:05:27,910
-You're good? What do you need?
-CRISTINA: My camera.

64
00:05:39,922 --> 00:05:42,133
(SUSPENSEFUL MUSIC PLAYING)

65
00:06:03,237 --> 00:06:07,700
Nothing reminds you
of how small and fragile humans are

66
00:06:08,117 --> 00:06:10,244
than being in the water
with a tiger shark.

67
00:06:10,745 --> 00:06:12,455
<i>It's not for the faint of heart.</i>

68
00:06:15,625 --> 00:06:17,668
<i>It takes diving into the deep end</i>

69
00:06:18,002 --> 00:06:20,755
and really immersing yourself
in their world

70
00:06:20,922 --> 00:06:22,882
to begin to understand these creatures.

71
00:06:29,097 --> 00:06:31,516
<i>Being a wildlife photographer,</i>
<i>what I'm trying to do</i>

72
00:06:31,599 --> 00:06:33,810
<i>is paint a picture of our planet.</i>

73
00:06:38,022 --> 00:06:41,734
<i>I try to show what's beautiful</i>
<i>and special about nature,</i>

74
00:06:42,193 --> 00:06:45,822
<i>the majesty of our planet</i>
<i>and how it supports all living things,</i>

75
00:06:45,905 --> 00:06:47,240
<i>including humans.</i>

76
00:06:48,032 --> 00:06:49,367
(CAMERA CLICKS)

77
00:07:03,339 --> 00:07:04,590
Cristina's coming up.

78
00:07:07,635 --> 00:07:08,803
-WILL: Hey.
-CHRISTINA: Hey, Will!

79
00:07:09,637 --> 00:07:11,055
-My camera?
-WILL: Uh. Yup.

80
00:07:15,226 --> 00:07:16,519
Did you get the shots you wanted?

81
00:07:16,602 --> 00:07:17,770
-CRISTINA: I did.
-WILL: Okay.

82
00:07:17,854 --> 00:07:20,690
I did. I got a great shot
of the shark and a shot of you.

83
00:07:21,482 --> 00:07:23,484
Did my face looks too scared?

84
00:07:23,568 --> 00:07:25,736
-CRISTINA: No, you looked good.
-I looked good. Did I look strong?

85
00:07:25,862 --> 00:07:29,157
Okay. All right. (LAUGHS)

86
00:07:32,076 --> 00:07:34,787
WILL: <i>The tagged shark</i>
<i>goes straight back on track...</i>

87
00:07:35,788 --> 00:07:37,707
<i>like it's locked on course.</i>

88
00:07:40,168 --> 00:07:43,463
Something powerful is attracting them.

89
00:07:44,130 --> 00:07:45,173
But what?

90
00:07:48,342 --> 00:07:52,930
<i>There might be a clue in a smell</i>
<i>that takes me right back to being a kid.</i>

91
00:08:12,950 --> 00:08:15,328
WILL: <i>A smell I bet you know too.</i>

92
00:08:18,539 --> 00:08:19,957
<i>Freshly cut grass.</i>

93
00:08:25,379 --> 00:08:28,049
<i>When grass is cut, it releases a scent</i>

94
00:08:28,216 --> 00:08:30,551
<i>that floats straight</i>
<i>to the front of your brain...</i>

95
00:08:32,053 --> 00:08:35,598
<i>going to the exact spot</i>
<i>where memories and emotions are made.</i>

96
00:08:37,517 --> 00:08:38,643
(GRASS RUSTLING)

97
00:08:39,185 --> 00:08:41,562
WILL: <i>That's why smells can be so vivid...</i>

98
00:08:44,023 --> 00:08:45,191
<i>so powerful.</i>

99
00:08:49,529 --> 00:08:50,821
<i>And cut grass?</i>

100
00:08:52,865 --> 00:08:54,408
<i>That's the smell of summer.</i>

101
00:08:58,538 --> 00:09:00,915
<i>When a caterpillar takes a bite of grass,</i>

102
00:09:01,249 --> 00:09:03,167
<i>it releases that same scent.</i>

103
00:09:04,210 --> 00:09:05,294
<i>And once again...</i>

104
00:09:05,920 --> 00:09:07,755
-(CAWS)
-WILL: <i>...it has an instant effect.</i>

105
00:09:11,092 --> 00:09:14,053
(BIRDS SCREECHING)

106
00:09:14,262 --> 00:09:16,430
-(THRILLING MUSIC PLAYING)
-(BIRDS CHIRPING)

107
00:09:20,226 --> 00:09:21,602
(CROWS CAW)

108
00:09:23,688 --> 00:09:26,148
WILL: <i>But now,</i>
<i>it's not the smell of summer.</i>

109
00:09:26,899 --> 00:09:28,776
<i>It's the smell of lunch.</i>

110
00:09:31,362 --> 00:09:34,574
<i>Smell is the only sense with no filter.</i>

111
00:09:35,074 --> 00:09:37,118
It's hardwired straight to the brain.

112
00:09:38,786 --> 00:09:42,498
<i>It's just that some of us are better</i>
<i>at smelling than others.</i>

113
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CRISTINA: <i>Sharks have a sense of smell</i>
<i>that's hundreds of times more potent</i>

114
00:09:52,091 --> 00:09:53,926
<i>and accurate than that of humans.</i>

115
00:09:54,844 --> 00:09:58,306
Such an enormous part of their brain
is dedicated to smelling,

116
00:09:58,389 --> 00:10:01,517
to finding their way
through the vast expanse of the ocean.

117
00:10:05,104 --> 00:10:07,189
WILL: <i>The shark with the tracker</i>
<i>is on the move.</i>

118
00:10:08,107 --> 00:10:09,233
<i>And so are we.</i>

119
00:10:10,943 --> 00:10:14,447
<i>I don't remember anyone in </i>Jaws <i>saying,</i>

120
00:10:14,822 --> 00:10:16,782
"We're gonna need a smaller boat."

121
00:10:17,033 --> 00:10:18,868
(THRILLING MUSIC PLAYING)

122
00:10:22,955 --> 00:10:25,541
CRISTINA: <i>Sharks are coming</i>
<i>from all over the place,</i>

123
00:10:25,625 --> 00:10:29,378
<i>and they're all honing in</i>
<i>on this particular little spot of land</i>

124
00:10:29,462 --> 00:10:30,755
<i>in the middle of nowhere...</i>

125
00:10:35,259 --> 00:10:36,344
<i>Raine Island.</i>

126
00:10:39,138 --> 00:10:40,765
So what's happening on the island?

127
00:10:40,848 --> 00:10:43,184
That's the next thing
that we need to figure out.

128
00:10:47,730 --> 00:10:52,068
<i>What makes this speck of sand</i>
<i>in the middle of the ocean so special,</i>

129
00:10:52,568 --> 00:10:55,321
<i>such a mecca for these creatures</i>
<i>to be here?</i>

130
00:11:02,828 --> 00:11:03,871
Is that a turtle?

131
00:11:05,373 --> 00:11:07,083
-WILL: Yes, wow.
-There it is, there it is.

132
00:11:09,877 --> 00:11:10,920
WILL: Oh, wow.

133
00:11:11,712 --> 00:11:14,090
(AMBIENT MUSIC PLAYING)

134
00:11:29,605 --> 00:11:32,525
WILL: <i>So, they're taking a breath</i>
<i>and going down?</i>

135
00:11:33,359 --> 00:11:37,446
CRISTINA: <i>A sea turtle can hold its breath</i>
<i>under water for up to seven hours.</i>

136
00:11:38,406 --> 00:11:40,866
<i>So, when you see the same turtle</i>
<i>popping its head up</i>

137
00:11:40,950 --> 00:11:42,118
<i>over, and over, and over again...</i>

138
00:11:43,661 --> 00:11:45,454
<i>you know, they clearly</i>
<i>are not just breathing,</i>

139
00:11:45,538 --> 00:11:47,957
<i>they're smelling for something,</i>
<i>they're sniffing.</i>

140
00:11:48,499 --> 00:11:52,211
<i>Turtles are one of the few animals</i>
<i>that can smell both in water and air.</i>

141
00:11:53,045 --> 00:11:54,755
<i>That's why they're popping</i>
<i>their noses out.</i>

142
00:11:55,965 --> 00:11:58,384
WILL: <i>And whatever it is</i>
<i>that they're sniffing,</i>

143
00:11:58,718 --> 00:12:02,221
<i>it seems to be sending them</i>
<i>the same way as the sharks.</i>

144
00:12:03,055 --> 00:12:04,724
WILL: There's one. There's two.

145
00:12:05,015 --> 00:12:06,392
-CRISTINA: Yeah.
-WILL: One there.

146
00:12:06,475 --> 00:12:08,561
-CRISTINA: Just look at them. Wow.
-WILL: Oh, that's fantastic.

147
00:12:08,644 --> 00:12:10,146
They're all over this place.

148
00:12:11,897 --> 00:12:13,441
-WILL: I see more and more and more.
-CRISTINA: Yeah.

149
00:12:13,607 --> 00:12:15,401
(THRILLING MUSIC PLAYING)

150
00:12:17,570 --> 00:12:19,947
WILL: <i>Wow. That is gorgeous.</i>

151
00:12:26,662 --> 00:12:29,415
-WILL: <i>There's a lot of turtles out there.</i>
-CRISTINA: <i>A lot of turtles.</i>

152
00:12:31,333 --> 00:12:32,376
<i>So many.</i>

153
00:12:38,799 --> 00:12:40,968
WILL: <i>Can a shark eat a turtle?</i>

154
00:12:42,344 --> 00:12:46,223
<i>Because, I mean,</i>
<i>this looks like a turtle buffet.</i>

155
00:12:48,017 --> 00:12:51,729
CRISTINA: <i>You need incredible teeth</i>
<i>to munch through that shell.</i>

156
00:12:52,354 --> 00:12:55,691
<i>Tiger sharks are one</i>
<i>of the only creatures on the planet</i>

157
00:12:55,775 --> 00:12:58,277
<i>capable of eating</i>
<i>an adult green sea turtle.</i>

158
00:13:01,781 --> 00:13:05,534
WILL: <i>But the turtles</i>
<i>aren't sweating these sharks one bit.</i>

159
00:13:08,621 --> 00:13:11,832
<i>And the sharks are swimming right on past.</i>

160
00:13:21,342 --> 00:13:26,096
It seems like the turtles and the sharks
are being drawn to this island.

161
00:13:26,347 --> 00:13:28,891
-(ENGINE REVIVING)
-(BIRDS CHIRPING)

162
00:13:32,228 --> 00:13:34,522
WILL: <i>Raine Island is sacred ground.</i>

163
00:13:36,982 --> 00:13:39,985
<i>If you wanna go ashore,</i>
<i>you first have to get permission</i>

164
00:13:40,069 --> 00:13:41,946
<i>from the guardians of the island.</i>

165
00:13:45,199 --> 00:13:46,200
JOHNSON: Hello!

166
00:13:46,534 --> 00:13:47,618
Ma'am. Ma'am.

167
00:13:48,410 --> 00:13:49,870
-CRISTINA: Hello!
-FALEN: Ma'am.

168
00:13:49,954 --> 00:13:51,831
Hello. Welcome.

169
00:13:51,997 --> 00:13:53,249
-How are you?
-Yeah, good thanks.

170
00:13:53,332 --> 00:13:54,333
-Cristina.
-Hello, hello.

171
00:13:54,416 --> 00:13:55,501
-Hi.
-Yeah. Welcome.

172
00:13:55,584 --> 00:13:56,752
-Will. I'm good.
-JOHNSON: Yeah. Johnson.

173
00:13:56,836 --> 00:13:58,254
-Johnson.
-JOHNSON: I'd like to welcome you

174
00:13:58,337 --> 00:13:59,380
to our island.

175
00:13:59,880 --> 00:14:03,259
WILL: <i>And then there's a ritual</i>
<i>to help get rid</i>

176
00:14:03,342 --> 00:14:05,386
<i>of any scents from elsewhere.</i>

177
00:14:06,220 --> 00:14:09,056
JOHNSON: Before we allow you,
usually you put odor

178
00:14:09,265 --> 00:14:11,350
both on your shoulders and on your head.

179
00:14:11,517 --> 00:14:13,978
-Mm-hmm.
-JOHNSON: Yeah. This is to protect you.

180
00:14:15,062 --> 00:14:16,981
-This is like your smell you're giving me?
-JOHNSON: Yes.

181
00:14:17,064 --> 00:14:18,274
-Oh, how cool is that.
-JOHNSON: Yes, so...

182
00:14:18,524 --> 00:14:19,942
I need all the protection I can get, so...

183
00:14:20,025 --> 00:14:21,026
Yeah.

184
00:14:21,485 --> 00:14:24,947
You know, we're very grateful
and very honored for your hospitality.

185
00:14:25,030 --> 00:14:26,198
-Yes.
-Thank you so much.

186
00:14:26,407 --> 00:14:28,242
(BIRDS CHIRPING)

187
00:14:29,076 --> 00:14:31,620
WILL: <i>I can't ever remember</i>
<i>being in a place</i>

188
00:14:31,704 --> 00:14:34,081
<i>where smell is so important</i>

189
00:14:34,790 --> 00:14:36,542
<i>for humans and animals.</i>

190
00:14:39,253 --> 00:14:41,714
<i>But what signal is it sending out?</i>

191
00:14:54,810 --> 00:14:58,105
WILL: <i>One explorer</i>
<i>might have a unique insight.</i>

192
00:15:01,150 --> 00:15:03,110
(SUSPENSEFUL MUSIC PLAYING)

193
00:15:04,737 --> 00:15:05,738
MALE VOICE 1: Left turn!

194
00:15:07,448 --> 00:15:08,490
Paddle.

195
00:15:10,117 --> 00:15:14,163
And right turn. Hold that line. Perfect.

196
00:15:16,290 --> 00:15:17,625
I could do that all day.

197
00:15:24,715 --> 00:15:26,508
WILL: <i>Because Erik can't see,</i>

198
00:15:26,842 --> 00:15:30,012
<i>he relies on smell</i>
<i>much more than the rest of us.</i>

199
00:15:32,389 --> 00:15:34,808
ERIK: <i>The wilderness</i>
<i>can be such a hostile place.</i>

200
00:15:35,976 --> 00:15:40,481
<i>And I always, as a blind person, thought,</i>
<i>"Could I flourish in that environment?"</i>

201
00:15:42,983 --> 00:15:44,568
See, I'm getting a whiff of salmon.

202
00:15:46,528 --> 00:15:49,490
Where there are salmon,
there are bears, so heads up.

203
00:15:55,245 --> 00:15:58,832
MALE VOICE 2: <i>Oh, wow. Holy cow.</i>
<i>He's looking right at us.</i>

204
00:15:59,166 --> 00:16:00,668
<i>Oh, he knows we're here.</i>

205
00:16:02,920 --> 00:16:04,004
MALE VOICE 2: <i>What should we do?</i>

206
00:16:04,254 --> 00:16:08,217
ERIK: <i>Wow. We should be very quiet.</i>
<i>Shrink down. This is their neighborhood.</i>

207
00:16:08,884 --> 00:16:10,260
<i>Let 'em do their thing.</i>

208
00:16:14,765 --> 00:16:16,809
(GRUNTS)

209
00:16:23,691 --> 00:16:26,193
ERIK: <i>When I lost my sight,</i>
<i>I started paying attention</i>

210
00:16:26,276 --> 00:16:27,403
<i>to my other senses.</i>

211
00:16:29,613 --> 00:16:33,325
<i>I started recognizing smells</i>
<i>that I hadn't noticed before.</i>

212
00:16:35,160 --> 00:16:37,913
<i>I've learned to smell the rain</i>
<i>before the drops come.</i>

213
00:16:39,373 --> 00:16:42,459
<i>Or the smell of snow</i>
<i>when it's baked by the sun.</i>

214
00:16:43,961 --> 00:16:48,507
<i>Or often, I can recognize trees</i>
<i>and plants by their unique scents.</i>

215
00:16:49,967 --> 00:16:52,970
<i>The scent of salmon in the air</i>
<i>is so clear to me.</i>

216
00:16:54,596 --> 00:16:56,181
<i>It's a pretty intense smell.</i>

217
00:16:58,976 --> 00:17:04,064
<i>This is how I'm able not just to function</i>
<i>but to really thrive in this environment.</i>

218
00:17:04,648 --> 00:17:06,734
(BIRDS CHIRPING)

219
00:17:11,405 --> 00:17:14,575
WILL: <i>Erik can smell</i>
<i>the salmon in the water.</i>

220
00:17:16,076 --> 00:17:20,039
<i>But the salmon are smelling something</i>
<i>even more extraordinary.</i>

221
00:17:23,459 --> 00:17:26,378
<i>Thousands of rivers</i>
<i>pour into the Pacific Ocean.</i>

222
00:17:28,130 --> 00:17:33,260
<i>Somehow the salmon find their way up</i>
<i>the right one to the place they were born.</i>

223
00:17:35,512 --> 00:17:37,765
<i>And if you thought</i>
<i>the sharks were good at smelling,</i>

224
00:17:38,098 --> 00:17:39,892
<i>these guys are even better.</i>

225
00:17:43,562 --> 00:17:46,482
<i>They can pick up</i>
<i>a couple of drops of scent</i>

226
00:17:47,441 --> 00:17:49,818
<i>in one billion drops of water.</i>

227
00:17:50,194 --> 00:17:51,570
(BIRDS CHIRPING)

228
00:17:51,820 --> 00:17:55,032
ERIK: <i>You can definitely tell</i>
<i>that we're in the rainforest now, huh?</i>

229
00:17:55,532 --> 00:17:56,700
MALE VOICE 2: <i>Oh, yeah.</i>

230
00:17:58,410 --> 00:18:00,746
ERIK: <i>The musty smell</i>
<i>isn't really the trees,</i>

231
00:18:00,829 --> 00:18:02,164
<i>it's more the fungi.</i>

232
00:18:09,129 --> 00:18:10,798
(THRILLING MUSIC PLAYING)

233
00:18:11,340 --> 00:18:15,260
WILL: <i>When we think of fungus,</i>
<i>we think of a single mushroom.</i>

234
00:18:17,679 --> 00:18:21,016
<i>But that's just the fruit</i>
<i>of something much bigger.</i>

235
00:18:27,940 --> 00:18:32,486
<i>It's like a giant spider web</i>
<i>weaving between the tree roots.</i>

236
00:18:37,407 --> 00:18:40,869
<i>The strands connect the forest</i>
<i>to such an extent</i>

237
00:18:42,162 --> 00:18:47,584
<i>that the trees can pass water, nutrients,</i>
<i>even messages between each other.</i>

238
00:18:49,878 --> 00:18:52,589
(ROCK MUSIC PLAYING)

239
00:18:54,758 --> 00:18:58,137
WILL: <i>Together,</i>
<i>they join huge areas of forest</i>

240
00:18:58,220 --> 00:19:00,055
<i>into one single system.</i>

241
00:19:01,849 --> 00:19:05,227
<i>Scientists call it the wood wide web.</i>

242
00:19:10,149 --> 00:19:11,525
<i>So when it rains,</i>

243
00:19:11,900 --> 00:19:16,488
<i>it's not just the smell of the riverbank</i>
<i>that's flowing into the stream,</i>

244
00:19:17,364 --> 00:19:20,450
<i>it's the smell of that wood wide web.</i>

245
00:19:22,619 --> 00:19:26,039
<i>A unique cocktail that stays</i>
<i>in the salmon's memory.</i>

246
00:19:27,666 --> 00:19:30,502
<i>And guides them hundreds of miles home.</i>

247
00:19:37,176 --> 00:19:41,013
<i>The salmon aren't picking up</i>
<i>the smell of their home river,</i>

248
00:19:41,597 --> 00:19:44,349
<i>but the smell of their home riverbank.</i>

249
00:19:48,520 --> 00:19:51,148
<i>But there's no trees on Raine Island.</i>

250
00:19:51,690 --> 00:19:54,359
<i>So, what do the turtles and sharks smell?</i>

251
00:19:55,277 --> 00:19:56,612
<i>Cristina reckons...</i>

252
00:19:57,404 --> 00:19:58,989
we need to get amphibious.

253
00:19:59,239 --> 00:20:01,491
(SUSPENSEFUL MUSIC PLAYING)

254
00:20:05,662 --> 00:20:09,082
WILL: <i>Though, with sharks about,</i>
<i>I'm staying near the surface.</i>

255
00:20:17,674 --> 00:20:20,969
CRISTINA: <i>You know, even though</i>
<i>it looks like one piece of coral...</i>

256
00:20:23,889 --> 00:20:28,101
<i>each branch is actually made</i>
<i>of thousands of tiny creatures...</i>

257
00:20:30,187 --> 00:20:32,481
<i>with its own mouth and tentacles.</i>

258
00:20:35,192 --> 00:20:39,279
<i>But in every creature</i>
<i>lives an even tinier algae...</i>

259
00:20:40,948 --> 00:20:45,244
<i>and each of those algae</i>
<i>release minute bubbles of aromatic gas.</i>

260
00:20:47,996 --> 00:20:50,999
<i>If you look close enough,</i>
<i>you can actually see it.</i>

261
00:20:55,629 --> 00:20:59,883
<i>It's this gas that gives off</i>
<i>a unique-smelling fingerprint.</i>

262
00:21:02,010 --> 00:21:04,346
But it is that smell
that tells the turtles

263
00:21:04,429 --> 00:21:06,807
that they're approaching land
because the coral reef

264
00:21:06,890 --> 00:21:08,892
can only grow in shallow waters.

265
00:21:09,393 --> 00:21:10,811
So essentially,

266
00:21:11,561 --> 00:21:14,022
what is for us the smell of the ocean,

267
00:21:14,439 --> 00:21:17,150
for turtles is the smell of land.

268
00:21:18,485 --> 00:21:19,486
You got it.

269
00:21:19,945 --> 00:21:21,989
-(BIRDS CHIRPING)
-(WATER RUSHING)

270
00:21:25,492 --> 00:21:29,621
WILL: <i>When I was a kid,</i>
<i>we'd sometimes drive to Atlantic City.</i>

271
00:21:30,706 --> 00:21:34,001
It was exciting
to get that first whiff of the sea

272
00:21:34,376 --> 00:21:36,086
and know we were nearly there,

273
00:21:36,878 --> 00:21:40,090
'cause you knew you'd be able
to get out of that damn car soon.

274
00:21:41,383 --> 00:21:43,969
<i>That's the incredible thing about smell.</i>

275
00:21:44,678 --> 00:21:49,641
<i>One hint of that scent and I'm remembering</i>
<i>my childhood vacations.</i>

276
00:21:53,186 --> 00:21:58,442
<i>But for these turtles, that same smell</i>
<i>seems to be about finding their way home.</i>

277
00:22:04,489 --> 00:22:08,452
WILL: <i>There's over one thousand miles</i>
<i>of shore here.</i>

278
00:22:09,453 --> 00:22:11,580
<i>We're on the Great Barrier Reef,</i>

279
00:22:12,122 --> 00:22:15,542
<i>the longest stretch of coral</i>
<i>anywhere on the planet.</i>

280
00:22:17,502 --> 00:22:21,673
<i>The smell it gives off</i>
<i>might get you into the right city...</i>

281
00:22:21,923 --> 00:22:23,383
(SCREECHING)

282
00:22:23,759 --> 00:22:27,554
WILL: <i>...but it's a different smell</i>
<i>that's gonna get you to the right street.</i>

283
00:22:28,138 --> 00:22:31,058
-(SUSPENSEFUL MUSIC PLAYING)
-(SCREECHING)

284
00:22:34,895 --> 00:22:38,899
CRISTINA: <i>The only other thing</i>
<i>Raine Island is famous for is birds.</i>

285
00:22:39,399 --> 00:22:41,735
<i>And, oh, boy, do they stink.</i>

286
00:22:43,028 --> 00:22:45,822
(QUACKING)

287
00:22:52,913 --> 00:22:55,874
-Very distinct smell, no?
-Yeah, that's a very distinct smell.

288
00:23:01,713 --> 00:23:04,966
CRISTINA: <i>That bird smell is a tricky one</i>
<i>because it's a cocktail.</i>

289
00:23:05,050 --> 00:23:10,639
It's a concoction of dead fish and poo,
and that sea smell,

290
00:23:10,722 --> 00:23:14,017
and it's fresh, and it's also been
sitting there for months.

291
00:23:14,101 --> 00:23:16,561
I mean it's, um, it's...
it's hard to describe,

292
00:23:16,645 --> 00:23:18,563
but it's, uh,
pretty unforgettable. (CHUCKLES)

293
00:23:18,897 --> 00:23:21,358
(BIRDS SCREECHING, CHIRPING)

294
00:23:21,817 --> 00:23:25,779
So all of this back here
is the original guano?

295
00:23:25,946 --> 00:23:28,115
-Yes.
-WILL: So this is...

296
00:23:28,657 --> 00:23:32,119
tens of thousands of years of birds...

297
00:23:32,452 --> 00:23:35,747
Uh. What's the...
what's the scientific word for pooping?

298
00:23:36,248 --> 00:23:37,290
Uh...

299
00:23:37,499 --> 00:23:38,875
-Okay. All right, so... (LAUGHS)
-Or uh...

300
00:23:39,292 --> 00:23:41,920
-Evacuating. (LAUGHS)
-WILL: Evac... (CHUCKLES)

301
00:23:42,003 --> 00:23:45,340
It just, uh, makes me feel
very, very unscience-y.

302
00:23:45,590 --> 00:23:47,592
(BIRDS CHIRPING)

303
00:23:48,343 --> 00:23:52,305
WILL: <i>That smell makes me</i>
<i>want to evacuate this island.</i>

304
00:23:55,809 --> 00:24:00,313
<i>But it might be that nasty stink</i>
<i>that's bringing thousands of animals in...</i>

305
00:24:02,274 --> 00:24:04,067
(BIRDS CHIRPING)

306
00:24:07,279 --> 00:24:11,867
WILL: <i>So, the turtles smell land</i>
<i>by picking up the gases released</i>

307
00:24:11,950 --> 00:24:12,993
<i>by the coral.</i>

308
00:24:14,327 --> 00:24:17,372
And then they hone in
on this particular island

309
00:24:17,456 --> 00:24:20,292
because of the smell of the bird...

310
00:24:21,126 --> 00:24:22,169
evacuation.

311
00:24:22,919 --> 00:24:26,006
<i>But why are they coming here?</i>

312
00:24:27,674 --> 00:24:31,928
WILL: <i>Well, there's another</i>
<i>underwater animal that can give us a clue.</i>

313
00:24:46,651 --> 00:24:50,197
<i>Just like Raine Island,</i>
<i>the coral reefs off Indonesia</i>

314
00:24:50,280 --> 00:24:52,199
<i>are home to a secret gathering.</i>

315
00:24:54,451 --> 00:24:55,619
<i>But not turtles.</i>

316
00:25:07,422 --> 00:25:09,216
<i>On one night in spring,</i>

317
00:25:09,633 --> 00:25:13,720
<i>Palolo worms suddenly start</i>
<i>to emerge from the reef.</i>

318
00:25:15,680 --> 00:25:18,391
<i>And as they do, they release a scent.</i>

319
00:25:27,609 --> 00:25:30,028
<i>A fragrance they were born to follow.</i>

320
00:25:32,531 --> 00:25:37,327
<i>Because smell in the natural world</i>
<i>doesn't always mean food.</i>

321
00:25:38,161 --> 00:25:40,997
<i>Sometimes, it means sex.</i>

322
00:25:41,289 --> 00:25:43,291
(ROCK MUSIC PLAYING)

323
00:25:50,173 --> 00:25:54,344
WILL: <i>That scent is enough to trigger</i>
<i>the worms to release their eggs.</i>

324
00:26:00,392 --> 00:26:04,187
<i>A mass spawning</i>
<i>that only happens once a year.</i>

325
00:26:07,649 --> 00:26:09,568
<i>That's what the turtles are up to too.</i>

326
00:26:12,821 --> 00:26:15,240
<i>Coming together to lay their eggs.</i>

327
00:26:18,201 --> 00:26:20,662
CRISTINA: No, there's not a single
male turtle on this beach.

328
00:26:20,745 --> 00:26:22,581
-They're all girls.
-WILL: Oh, wow.

329
00:26:23,623 --> 00:26:26,543
-CRISTINA: Oh, look at this.
-WILL: That's a turtle egg shell.

330
00:26:26,918 --> 00:26:29,879
So, this here is an egg that didn't hatch.
You can tell...

331
00:26:30,130 --> 00:26:31,715
-WILL: Oh.
-...because it's got all the yolk in.

332
00:26:32,048 --> 00:26:33,383
(BIRDS CHIRPING)

333
00:26:34,217 --> 00:26:35,302
CRISTINA: Because it's leathery.

334
00:26:35,427 --> 00:26:36,970
-It's, uh, porous, so...
-WILL: Yeah.

335
00:26:37,053 --> 00:26:40,515
...the baby egg... the baby
hatchling inside can actually smell

336
00:26:40,599 --> 00:26:42,017
even while it's in the nest,

337
00:26:42,642 --> 00:26:46,021
and it starts picking up the scent
of the island where she was born.

338
00:26:51,192 --> 00:26:53,486
(AMBIENT MUSIC PLAYING)

339
00:26:59,242 --> 00:27:02,662
WILL: <i>The turtles are born here</i>
<i>and they lay their eggs here.</i>

340
00:27:03,496 --> 00:27:04,789
<i>But they don't live here.</i>

341
00:27:05,415 --> 00:27:08,335
<i>In fact, they rarely come ashore at all.</i>

342
00:27:10,629 --> 00:27:15,133
<i>For many, it's the first time</i>
<i>they've been on land for years.</i>

343
00:27:18,011 --> 00:27:21,139
<i>And, like an astronaut</i>
<i>experiencing gravity again,</i>

344
00:27:21,556 --> 00:27:23,600
<i>they suddenly feel their true weight.</i>

345
00:27:25,310 --> 00:27:28,021
<i>All 350 pounds of it.</i>

346
00:27:35,779 --> 00:27:37,113
(BIRDS CHIRPING)

347
00:27:38,198 --> 00:27:41,493
WILL: <i>They struggle up the beach</i>
<i>until they're far enough away</i>

348
00:27:41,618 --> 00:27:43,745
<i>from the tide line to dig a nest.</i>

349
00:27:50,585 --> 00:27:51,586
<i>But it's hot.</i>

350
00:27:52,253 --> 00:27:54,005
<i>More than a 100 degrees.</i>

351
00:27:56,883 --> 00:27:59,803
<i>They need to lay their eggs</i>
<i>and get back off the beach</i>

352
00:27:59,969 --> 00:28:01,680
<i>before they get baked in the sun.</i>

353
00:28:06,893 --> 00:28:08,228
<i>They have to rush.</i>

354
00:28:09,354 --> 00:28:11,940
<i>And when you rush, one slip...</i>

355
00:28:12,857 --> 00:28:14,859
<i>can have deadly consequences.</i>

356
00:28:17,570 --> 00:28:20,323
She slipped off these rocks here
during the night

357
00:28:20,407 --> 00:28:23,785
when she was up trying to lay,
so we need to turn her on her side

358
00:28:24,202 --> 00:28:27,122
um, and get righted up.
Otherwise, if she stays like this,

359
00:28:27,205 --> 00:28:29,541
she's gonna die during the day
with the heat of the sun.

360
00:28:29,958 --> 00:28:32,085
-WILL: And can we help?
-Yeah, we'd love a hand.

361
00:28:32,168 --> 00:28:33,378
-WILL: Let's do it.
-KATHARINE: Let's dig in

362
00:28:33,461 --> 00:28:35,505
-and help flip her.
-WILL: Okay, so we go under.

363
00:28:35,588 --> 00:28:37,632
JOHNSON: Yeah. And be careful...

364
00:28:38,174 --> 00:28:39,217
WILL: Mm-hmm.

365
00:28:39,592 --> 00:28:41,553
...from the flipper,
otherwise you're gonna get slapped.

366
00:28:41,678 --> 00:28:44,681
Avoid being slapped.
Got it. Never been good at that.

367
00:28:44,764 --> 00:28:46,808
-(CRISTINA LAUGHS)
-JOHNSON: So good. (LAUGHS)

368
00:28:46,933 --> 00:28:48,810
-(CHUCKLES)
-JOHNSON: So good.

369
00:28:49,185 --> 00:28:51,187
(BIRDS CHIRPING, SCREECHING)

370
00:28:52,063 --> 00:28:53,273
-Be careful.
-WILL: Yeah.

371
00:28:53,356 --> 00:28:55,525
Ready. One, two, three, go.

372
00:28:56,401 --> 00:28:57,944
-Hmm. That thing is strong.
-(GROANS)

373
00:28:58,027 --> 00:28:59,696
-Whoo!
-Yeah, that's why you watch the flipper.

374
00:28:59,779 --> 00:29:01,823
-That's why you were so moved.
-WILL: That figures. Okay, yeah.

375
00:29:02,866 --> 00:29:05,660
WILL: (CHUCKLES)
Her arm is as strong as mine.

376
00:29:06,202 --> 00:29:08,413
It's like there's almost a...
like a baseball bat

377
00:29:08,496 --> 00:29:09,831
in the... in the middle of it.

378
00:29:10,039 --> 00:29:12,167
-KATHARINE: Seriously?
-Like that's how strong it feels.

379
00:29:13,960 --> 00:29:18,757
WILL: <i>Without our help, this turtle mom</i>
<i>would almost certainly have fried to death</i>

380
00:29:18,840 --> 00:29:20,216
<i>before the day was out.</i>

381
00:29:21,676 --> 00:29:25,764
<i>As many as 2000 die that way</i>
<i>every single year.</i>

382
00:29:26,806 --> 00:29:27,974
<i>But not this one.</i>

383
00:29:28,600 --> 00:29:29,684
<i>Not this mom.</i>

384
00:29:30,560 --> 00:29:31,644
<i>She's gonna be okay.</i>

385
00:29:32,145 --> 00:29:35,106
-That was beautiful.
-Wow. Wow, she still looks strong too.

386
00:29:35,440 --> 00:29:36,900
CRISTINA: Off she goes. Look at that.

387
00:29:42,363 --> 00:29:43,823
(SOBS) Thank you.

388
00:29:44,866 --> 00:29:46,618
(THRILLING MUSIC PLAYING)

389
00:29:47,118 --> 00:29:48,119
(CRISTINA GIGGLING)

390
00:29:48,870 --> 00:29:49,871
(SNIFFLES)

391
00:29:52,624 --> 00:29:53,792
WILL: <i>That's fantastic.</i>

392
00:30:06,805 --> 00:30:09,224
WILL: <i>Not every story has a happy ending.</i>

393
00:30:11,392 --> 00:30:12,936
That is a horrendous smell.

394
00:30:13,478 --> 00:30:14,771
(BIRDS SCREECHING)

395
00:30:14,854 --> 00:30:17,482
-Oh, wow. This one didn't make it.
-Yeah.

396
00:30:18,066 --> 00:30:19,442
(BEES BUZZING)

397
00:30:22,070 --> 00:30:24,614
-Yeah, that's rough.
-CRISTINA: I know. She almost did it.

398
00:30:25,198 --> 00:30:27,784
WILL: And you think it's just exhaustion?

399
00:30:27,909 --> 00:30:31,162
She probably got trapped up here,
got too hot.

400
00:30:31,246 --> 00:30:32,247
Got it.

401
00:30:32,372 --> 00:30:34,290
CRISTINA: It's over 100 degrees
on this beach.

402
00:30:34,958 --> 00:30:38,002
This is one mother
who braved everything to lay her eggs,

403
00:30:38,545 --> 00:30:40,255
but she never made it back to the water.

404
00:30:45,718 --> 00:30:47,470
Smells like she's been here a while too.

405
00:30:49,722 --> 00:30:52,433
The good news is that in nature,
nothing is wasted.

406
00:30:52,559 --> 00:30:53,560
Right.

407
00:30:54,310 --> 00:30:55,770
WILL: <i>And that's the answer.</i>

408
00:30:56,521 --> 00:30:59,190
<i>That rotting flesh</i>
<i>is what the sharks have come for.</i>

409
00:31:00,066 --> 00:31:02,443
<i>They don't want to take on a live turtle.</i>

410
00:31:02,902 --> 00:31:04,445
Those flippers, for one thing.

411
00:31:05,071 --> 00:31:06,281
But they don't have to.

412
00:31:06,656 --> 00:31:08,992
There are plenty of dead ones
to eat instead.

413
00:31:11,744 --> 00:31:14,664
<i>Dozens of mothers who came here</i>
<i>to lay their eggs,</i>

414
00:31:14,747 --> 00:31:17,166
<i>but died before they could</i>
<i>get back to the sea.</i>

415
00:31:19,168 --> 00:31:22,005
<i>All the sharks have to do</i>
<i>is wait in the shallows</i>

416
00:31:22,088 --> 00:31:23,464
<i>for the tide to rise.</i>

417
00:31:27,760 --> 00:31:32,515
<i>The smell that draws the sharks here</i>
<i>is the smell of death.</i>

418
00:31:32,849 --> 00:31:34,767
(AMBIENT MUSIC PLAYING)

419
00:31:35,435 --> 00:31:37,020
<i>The smell of sacrifice.</i>

420
00:31:40,732 --> 00:31:43,985
WILL: <i>Despite the dangers,</i>
<i>any mother that survives</i>

421
00:31:44,736 --> 00:31:47,280
<i>will be back following</i>
<i>the scent of the island,</i>

422
00:31:47,447 --> 00:31:49,198
<i>risking their lives once again.</i>

423
00:31:56,039 --> 00:31:58,333
<i>That's the funny thing about smell.</i>

424
00:31:58,833 --> 00:32:01,920
<i>It means different things</i>
<i>to different creatures.</i>

425
00:32:07,216 --> 00:32:10,303
<i>Life and birth brings the turtles.</i>

426
00:32:10,970 --> 00:32:15,183
<i>Where we smell bird poop,</i>
<i>they smell home.</i>

427
00:32:17,018 --> 00:32:18,019
(CAMERA CLICKS)

428
00:32:20,688 --> 00:32:22,565
(CAMERA CLICKS)

429
00:32:25,568 --> 00:32:27,654
Decay is bringing the sharks.

430
00:32:28,196 --> 00:32:31,866
Where we smell death... they smell dinner.

431
00:32:35,036 --> 00:32:37,205
<i>We pick up those same smells.</i>

432
00:32:37,956 --> 00:32:40,792
<i>It's just that we don't</i>
<i>truly understand them.</i>

433
00:32:43,836 --> 00:32:48,633
<i>What triggers a nostalgic memory for us</i>
<i>might mean life or death</i>

434
00:32:48,716 --> 00:32:50,176
<i>in the animal world.</i>

435
00:32:52,011 --> 00:32:56,516
<i>The smell of cut grass</i>
<i>is really a cry for help.</i>

436
00:32:58,142 --> 00:33:03,189
<i>The smell of forest rain</i>
<i>is really the smell of fungus.</i>

437
00:33:04,107 --> 00:33:09,112
<i>And the smell of sea</i>
<i>is actually the smell of shore.</i>

438
00:33:10,405 --> 00:33:11,948
CRISTINA: You know what's even crazier?

439
00:33:12,782 --> 00:33:15,410
They can remember
that exact smell for decades

440
00:33:15,910 --> 00:33:18,663
because they don't come back here
until their breeding age,

441
00:33:18,746 --> 00:33:20,581
and that could be thirty years or older.

442
00:33:21,541 --> 00:33:23,084
WILL: Thirty years.

443
00:33:23,668 --> 00:33:27,630
They remember this place from a smell
they smelled thirty years ago?

444
00:33:28,715 --> 00:33:30,800
CRISTINA: Do you remember
how anything smelled thirty years ago?

445
00:33:30,925 --> 00:33:32,385
-I don't... No. (LAUGHS)
-(CHUCKLES)

446
00:33:33,177 --> 00:33:37,849
Uh. Sunday morning breakfast
and the smell of bacon frying.

447
00:33:38,224 --> 00:33:40,268
That smell was spectacular.

448
00:33:40,560 --> 00:33:43,521
And I remember my father
who was a... a mechanic,

449
00:33:43,604 --> 00:33:45,106
<i>-so he always worked with...</i>
-CRISTINA: <i>Ah...</i>

450
00:33:45,273 --> 00:33:49,569
WILL: <i>...oils and he had, like,</i>
<i>a 20-year-old leather key pouch.</i>

451
00:33:50,028 --> 00:33:53,614
<i>The combination of oil and dirt ground</i>
<i>into that leather,</i>

452
00:33:53,781 --> 00:33:55,616
I actually used to like the smell.

453
00:33:55,742 --> 00:33:57,952
-What would possess you to smell...
-WILL: I never...

454
00:33:58,077 --> 00:34:00,163
-Yes, I remember that.
-(LAUGHS)

455
00:34:02,248 --> 00:34:06,753
WILL: <i>More than any other sense,</i>
<i>smell is intertwined with our memory</i>

456
00:34:07,045 --> 00:34:08,171
<i>and our emotions.</i>

457
00:34:10,256 --> 00:34:13,718
<i>It's an ancient instinct</i>
<i>that's just as powerful today.</i>

458
00:34:16,512 --> 00:34:20,850
It's a universal language
that links each and every living thing.

459
00:34:23,603 --> 00:34:25,146
CRISTINA: Come on, little one.
You can make it.

460
00:34:27,857 --> 00:34:29,192
Good job, young fella.

461
00:34:34,864 --> 00:34:39,285
But its meaning is personal
to you and you alone.

462
00:34:43,498 --> 00:34:45,500
(UPBEAT MUSIC PLAYING)

463
00:34:46,292 --> 00:34:48,211
WILL: <i>More hidden worlds lie ahead.</i>

464
00:34:50,171 --> 00:34:52,215
<i>In the oldest desert on Earth...</i>

465
00:34:54,258 --> 00:34:56,427
<i>I unlock the secret forces...</i>

466
00:34:57,345 --> 00:34:58,846
<i>driving our planet,</i>

467
00:34:59,472 --> 00:35:00,556
<i>the universe,</i>

468
00:35:01,516 --> 00:35:02,558
<i>life,</i>

469
00:35:03,017 --> 00:35:04,143
<i>and us.</i>

470
00:35:04,352 --> 00:35:05,937
MALE VOICE 3: Whoo!

471
00:35:07,980 --> 00:35:10,066
(THEME MUSIC PLAYING)

472
00:35:32,463 --> 00:35:34,549
(THEME MUSIC CONCLUDING)