1
00:00:06,381 --> 00:00:07,966
(THEME MUSIC BEGINS)

2
00:00:08,258 --> 00:00:12,887
BENEDICT:<i> Enter a world</i>
<i>just beyond your perception.</i>

3
00:00:18,768 --> 00:00:22,105
<i>A world of extraordinary animals,</i>

4
00:00:23,064 --> 00:00:24,482
<i>with hidden powers,</i>

5
00:00:25,150 --> 00:00:26,526
<i>and super senses.</i>

6
00:00:27,610 --> 00:00:29,738
<i>If you think you know nature...</i>

7
00:00:32,490 --> 00:00:33,742
<i>think again.</i>

8
00:00:38,580 --> 00:00:39,622
(THEME MUSIC ENDS)

9
00:00:40,623 --> 00:00:41,666
(BIRD CAWS)

10
00:00:42,208 --> 00:00:43,668
BENEDICT:<i> To survive in extremes,</i>

11
00:00:45,837 --> 00:00:47,714
<i>you have to push the limits.</i>

12
00:00:52,469 --> 00:00:54,137
<i>In the Italian Alps,</i>

13
00:00:56,806 --> 00:00:58,558
<i>a towering dam</i>

14
00:01:02,062 --> 00:01:04,773
<i>as high as the Golden Gate Bridge.</i>

15
00:01:08,568 --> 00:01:10,612
<i>It holds a hidden treasure...</i>

16
00:01:14,074 --> 00:01:15,158
<i>salt.</i>

17
00:01:16,242 --> 00:01:17,827
<i>Pouring from its wall.</i>

18
00:01:20,121 --> 00:01:21,539
<i>It's so rare up here,</i>

19
00:01:22,332 --> 00:01:24,793
<i>ibex risk everything</i>
<i>to reach it.</i>

20
00:01:25,126 --> 00:01:27,504
(TENSE MUSIC PLAYING)

21
00:01:33,093 --> 00:01:37,472
<i>Scaling these near-vertical walls calls</i>
<i>on incredible climbing skills. </i>

22
00:01:44,604 --> 00:01:49,025
<i>These natural-born mountaineers </i>
<i>make it look like a walk in the park. </i>

23
00:01:52,237 --> 00:01:54,405
<i>But imagine what it's like for a kid.</i>

24
00:01:54,739 --> 00:01:56,199
(BLEATS)

25
00:01:57,242 --> 00:01:58,618
BENEDICT: <i>Going up there</i>

26
00:02:00,787 --> 00:02:02,956
<i>for the very first time.</i>

27
00:02:04,332 --> 00:02:08,086
(MUSIC CONTINUES)

28
00:02:11,965 --> 00:02:14,676
BENEDICT: <i>He has no choice</i>
<i>but to follow his mother.</i>

29
00:02:17,428 --> 00:02:19,681
<i>A fall would mean certain death. </i>

30
00:02:20,014 --> 00:02:22,559
(ROCKS CLATTER)

31
00:02:26,813 --> 00:02:28,773
<i>But step by step,</i>

32
00:02:29,399 --> 00:02:31,776
<i>he discovers</i>
<i>he has an amazing grip.</i>

33
00:02:33,570 --> 00:02:35,029
<i>The higher he goes,</i>

34
00:02:35,405 --> 00:02:37,240
<i>the more vertical the face.</i>

35
00:02:43,371 --> 00:02:47,292
<i>Now, his survival depends</i>
<i>on his innate superpower. </i>

36
00:02:52,172 --> 00:02:55,842
<i>Soft, rubbery soles mold around </i>
<i>even the tiniest ridges. </i>

37
00:02:59,012 --> 00:03:01,598
<i>Locking them inside the hard edge </i>
<i>of the hoof. </i>

38
00:03:08,897 --> 00:03:10,106
<i>He balances.</i>

39
00:03:12,400 --> 00:03:14,527
<i>Every step on a knife edge.</i>

40
00:03:14,986 --> 00:03:17,822
(MUSIC CONTINUES)

41
00:03:19,574 --> 00:03:22,243
BENEDICT:<i> It's exhausting work</i>
<i>for one so young.</i>

42
00:03:22,535 --> 00:03:26,247
(MUSIC CONTINUES)

43
00:03:29,834 --> 00:03:31,461
(BLEATS)

44
00:03:40,011 --> 00:03:42,680
BENEDICT:<i> Just in time,</i>
<i>his mother notices.</i>

45
00:03:45,099 --> 00:03:46,392
(BLEATS)

46
00:03:47,602 --> 00:03:49,771
BENEDICT:<i> She gives him a chance</i>
<i>to recharge.</i>

47
00:03:53,566 --> 00:03:55,318
<i>A 5-minute power nap.</i>

48
00:03:56,361 --> 00:03:57,612
(CAWS)

49
00:03:58,738 --> 00:04:02,533
(MUSIC CONTINUES)

50
00:04:11,376 --> 00:04:13,544
BENEDCIT: <i>150 feet up,</i>

51
00:04:16,089 --> 00:04:19,467
<i>finally, he reaches his goal.</i>

52
00:04:19,884 --> 00:04:22,512
(TRIUMPHANT MUSIC PLAYING)

53
00:04:23,346 --> 00:04:28,142
BENEDICT: <i>Twenty percent of concrete</i>
<i>contains salt and water</i>

54
00:04:28,393 --> 00:04:31,521
<i>seeping through the dam </i>
<i>brings it to the surface. </i>

55
00:04:34,023 --> 00:04:38,861
<i>It may not look like much, </i>
<i>but this mineral lick is crucial </i>

56
00:04:38,945 --> 00:04:40,947
<i>for the kid to grow up strong.</i>

57
00:04:45,702 --> 00:04:48,079
<i>Muscles and nerves replenished,</i>

58
00:04:49,497 --> 00:04:51,666
<i>his epic ascent is complete.</i>

59
00:04:56,212 --> 00:05:00,550
<i>Death-defying missions like this</i>
<i>are a vital part of many animals' lives,</i>

60
00:05:03,720 --> 00:05:08,599
<i>and we're only just discovering</i>
<i>the wondrous ways in which they succeed.</i>

61
00:05:09,809 --> 00:05:13,271
(MUSIC CONTINUES)

62
00:05:28,244 --> 00:05:30,747
BENEDICT:
<i>The dunes of northeast Brazil.</i>

63
00:05:32,665 --> 00:05:35,293
<i>An area larger than Los Angeles.</i>

64
00:05:37,962 --> 00:05:40,757
<i>Scorched by the fierce equatorial sun. </i>

65
00:05:49,807 --> 00:05:51,726
<i>Many who try to cross</i>

66
00:05:52,852 --> 00:05:53,853
<i>-never make it.</i>
-(WIND HOWLS)

67
00:05:57,982 --> 00:05:59,484
BENEDICT:<i> But there are opportunities...</i>

68
00:06:00,234 --> 00:06:02,111
<i>you just need to find them.</i>

69
00:06:07,700 --> 00:06:10,328
<i>After five months in suspended animation,</i>

70
00:06:11,162 --> 00:06:12,538
<i>without food or water,</i>

71
00:06:15,500 --> 00:06:17,210
<i>a Brazilian slider,</i>

72
00:06:18,294 --> 00:06:21,464
<i>a normally aquatic turtle, emerges.</i>

73
00:06:25,468 --> 00:06:27,470
<i>Something has awakened her. </i>

74
00:06:30,640 --> 00:06:34,560
<i>Her acute sense of smell has detected </i>
<i>a change in the humidity, </i>

75
00:06:35,978 --> 00:06:37,855
<i>her only hope of survival</i>

76
00:06:38,648 --> 00:06:39,732
<i>is water.</i>

77
00:06:43,277 --> 00:06:44,487
<i>But to reach it,</i>

78
00:06:45,571 --> 00:06:47,990
<i>she must attempt the impossible.</i>

79
00:06:51,744 --> 00:06:53,162
<i>Traveling for days</i>

80
00:06:53,955 --> 00:06:56,624
<i>across sunbaked sands.</i>

81
00:07:02,964 --> 00:07:04,465
<i>Every moment exposed</i>

82
00:07:04,924 --> 00:07:06,759
<i>means hydration lost.</i>

83
00:07:11,013 --> 00:07:12,682
<i>And as the wind picks up,</i>

84
00:07:13,975 --> 00:07:15,768
<i>she loses the scent of water....</i>

85
00:07:22,191 --> 00:07:24,902
<i>So, which way now? </i>

86
00:07:30,616 --> 00:07:32,160
<i>In this hostile landscape,</i>

87
00:07:33,077 --> 00:07:34,454
<i>she'll soon dry up.</i>

88
00:07:37,623 --> 00:07:39,792
<i>But the sun that threatens</i>
<i>to cook her</i>

89
00:07:40,501 --> 00:07:42,503
<i>is also her guiding light.</i>

90
00:07:46,466 --> 00:07:48,468
<i>Using its position as a compass,</i>

91
00:07:49,886 --> 00:07:51,804
<i>she keeps on her course.</i>

92
00:08:04,942 --> 00:08:06,736
<i>She's almost there...</i>

93
00:08:08,070 --> 00:08:09,530
<i>Just in time.</i>

94
00:08:13,868 --> 00:08:15,453
<i>When the rains arrive,</i>

95
00:08:16,662 --> 00:08:19,081
<i>a magical transformation begins.</i>

96
00:08:24,170 --> 00:08:27,882
<i>In most dunes, water quickly drains</i>
<i>through the sand.... </i>

97
00:08:34,347 --> 00:08:38,184
<i>But here, a layer of solid rock</i>
<i>beneath</i>

98
00:08:39,143 --> 00:08:40,853
<i>blocks the water's path,</i>

99
00:08:42,146 --> 00:08:44,982
<i>allowing thousands of pools to form. </i>

100
00:08:45,274 --> 00:08:48,694
(SERENE MUSIC PLAYING)

101
00:08:49,278 --> 00:08:51,280
BENEDICT: <i>Just one last obstacle.</i>

102
00:09:11,342 --> 00:09:14,470
<i>Now, it's downhill all the way.</i>

103
00:09:18,766 --> 00:09:21,310
<i>Time to do what a slider does best.</i>

104
00:09:21,936 --> 00:09:25,356
(MUSIC CONTINUES)

105
00:09:43,207 --> 00:09:45,585
BENEDICT: <i>A crystal-clear oasis.</i>

106
00:09:53,009 --> 00:09:55,052
<i>These ephemeral pools bring food.</i>

107
00:10:00,516 --> 00:10:02,476
<i>And the chance to meet a mate...</i>

108
00:10:07,148 --> 00:10:11,736
<i>before the water vanishes</i>
<i>and the scorched desert returns. </i>

109
00:10:13,404 --> 00:10:15,948
(MUSIC CONTINUES)

110
00:10:21,537 --> 00:10:24,206
BENEDICT:<i> Incredible journeys</i>
<i>are happening across the planet.</i>

111
00:10:26,417 --> 00:10:28,002
<i>But they're often overlooked.</i>

112
00:10:32,798 --> 00:10:35,384
<i>-The city of London.</i>
-(CITY SOUNDS)

113
00:10:35,718 --> 00:10:38,346
BENEDICT: <i>A confusing man-made maze.</i>

114
00:10:41,891 --> 00:10:44,060
<i>But hidden away behind its walls,</i>

115
00:10:47,188 --> 00:10:48,356
<i>there are animals</i>

116
00:10:48,606 --> 00:10:51,567
<i>who've learned to navigate </i>
<i>this urban jungle. </i>

117
00:10:54,695 --> 00:10:59,075
<i>This buff-tailed bumblebee is about</i>
<i>to embark on a royal mission...</i>

118
00:11:01,535 --> 00:11:03,746
<i>to find food for the queen's larvae</i>

119
00:11:04,705 --> 00:11:07,208
<i>and secure the future of the colony.</i>

120
00:11:14,632 --> 00:11:16,342
<i>Easier said than done. </i>

121
00:11:16,926 --> 00:11:18,260
(BUZZES)

122
00:11:18,969 --> 00:11:22,848
BENEDICT: <i>Confusing concrete corridors</i>
<i>could be hard to navigate.</i>

123
00:11:26,060 --> 00:11:27,311
<i>But not for her.</i>

124
00:11:29,814 --> 00:11:31,565
<i>Like a London cab driver,</i>

125
00:11:32,066 --> 00:11:33,567
<i>she's got the knowledge.</i>

126
00:11:33,818 --> 00:11:35,444
(MUFFLED CHATTER)

127
00:11:35,569 --> 00:11:38,823
BENEDICT:<i> She knows the landmarks to build</i>
<i>a mental map of the streets.</i>

128
00:11:39,990 --> 00:11:42,660
<i>Though some things in this city</i>
<i>never stay put. </i>

129
00:11:50,501 --> 00:11:54,422
<i>But it takes more than a little traffic</i>
<i>to stop this busy bee. </i>

130
00:11:56,632 --> 00:12:00,469
<i>She travels up to seven miles </i>
<i>on her daily commute in search of nectar. </i>

131
00:12:01,137 --> 00:12:02,722
-(BUZZES)
-(BIRDS CHIRPING)

132
00:12:02,930 --> 00:12:04,557
BENEDICT:
<i>And this is where she finds it:</i>

133
00:12:06,559 --> 00:12:10,396
<i>one of three million gardens</i>
<i>that make up a quarter of the city.</i>

134
00:12:12,857 --> 00:12:14,984
<i>And it's in full bloom.</i>

135
00:12:16,277 --> 00:12:18,487
(BUZZES)

136
00:12:18,904 --> 00:12:23,117
BENEDICT:<i> Thousands of lenses in her eyes</i>
<i>detect the shape and color</i>

137
00:12:23,200 --> 00:12:24,535
<i>of nectar-rich flowers. </i>

138
00:12:26,996 --> 00:12:28,539
<i>And ultraviolet vision,</i>

139
00:12:29,373 --> 00:12:31,792
<i>reveals secret patterns in the petals.</i>

140
00:12:37,089 --> 00:12:39,008
<i>But another bee's already been here. </i>

141
00:12:40,926 --> 00:12:43,053
<i>So, to target untapped plants,</i>

142
00:12:44,555 --> 00:12:46,932
<i>she tunes into an invisible force.</i>

143
00:12:50,770 --> 00:12:54,482
<i>As bees fly, they gain a positive charge </i>
<i>from the atmosphere, </i>

144
00:12:58,360 --> 00:12:59,403
<i>but flowers</i>

145
00:13:00,446 --> 00:13:01,697
<i>are negatively charged.</i>

146
00:13:03,991 --> 00:13:06,660
<i>So, when a positive bee visits </i>
<i>a negative flower, </i>

147
00:13:06,827 --> 00:13:09,121
<i>it briefly alters the electric field.</i>

148
00:13:10,831 --> 00:13:12,249
(ELECTRICITY ZAPPING)

149
00:13:12,374 --> 00:13:15,294
BENEDICT: <i>Hairs on her legs</i>
<i>detect these changes.</i>

150
00:13:19,298 --> 00:13:22,593
<i>Ensuring she strikes gold every time. </i>

151
00:13:26,764 --> 00:13:29,600
<i>But her journey has just begun. </i>

152
00:13:30,267 --> 00:13:32,311
(BUZZES)

153
00:13:37,733 --> 00:13:40,152
BENEDICT: <i>She's called a worker bee</i>
<i>for a reason.</i>

154
00:13:43,405 --> 00:13:46,742
<i>She'll visit up to 5,000 flowers a day.</i>

155
00:13:51,372 --> 00:13:53,916
<i>Then, remembering every twist and turn,</i>

156
00:13:55,334 --> 00:13:57,586
<i>she carries her own body weight in pollen</i>

157
00:13:57,837 --> 00:14:00,130
<i>and nectar, all the way back </i>
<i>to the nest. </i>

158
00:14:03,592 --> 00:14:07,263
<i>A royal delivery for queen and colony.</i>

159
00:14:13,102 --> 00:14:16,689
<i>While many animals undertake </i>
<i>a testing daily commute, </i>

160
00:14:20,234 --> 00:14:23,445
<i>others embark on epic migrations</i>

161
00:14:24,864 --> 00:14:27,408
<i>that take months to complete.</i>

162
00:14:30,828 --> 00:14:32,496
<i>Winter is coming. </i>

163
00:14:34,665 --> 00:14:36,417
<i>Days are getting shorter. </i>

164
00:14:38,836 --> 00:14:40,671
<i>Food is running out. </i>

165
00:14:50,014 --> 00:14:52,975
<i>Bad news for a young humpback whale. </i>

166
00:15:04,445 --> 00:15:07,489
<i>He arrived in Antarctica with his mother, </i>

167
00:15:09,199 --> 00:15:13,495
<i>but now he's left all alone </i>
<i>in this vast ocean. </i>

168
00:15:16,874 --> 00:15:19,335
<i>And soon he must embark</i>

169
00:15:19,835 --> 00:15:23,589
<i>on one of the longest migrations</i>
<i>of any mammal. </i>

170
00:15:26,050 --> 00:15:31,430
<i>Swimming 80 miles a day </i>
<i>to reach warm waters further north. </i>

171
00:15:35,100 --> 00:15:39,104
<i>But how to navigate 3,000 miles </i>
<i>through a featureless ocean, </i>

172
00:15:39,647 --> 00:15:42,691
<i>with strong currents </i>
<i>that could push him off-course? </i>

173
00:15:47,029 --> 00:15:48,489
<i>To stay on-track,</i>

174
00:15:48,989 --> 00:15:52,910
<i>he tunes into</i>
<i>a mysterious planetary phenomenon.</i>

175
00:16:05,130 --> 00:16:09,343
<i>As charged particles </i>
<i>from the sun hit the Earth's atmosphere, </i>

176
00:16:10,636 --> 00:16:13,389
<i>they illuminate the southern skies... </i>

177
00:16:17,977 --> 00:16:21,271
<i>but there's more to this heavenly display</i>
<i>than meets the eye. </i>

178
00:16:23,107 --> 00:16:27,987
<i>The Aurora Australis reveals </i>
<i>Earth's magnetic field, </i>

179
00:16:29,071 --> 00:16:32,741
<i>an invisible force scientists </i>
<i>believe whales can sense </i>

180
00:16:33,242 --> 00:16:36,120
<i>using magnetic particles in their brains.</i>

181
00:16:37,871 --> 00:16:40,332
(BELLOWS)

182
00:16:41,000 --> 00:16:45,504
BENEDICT: <i>This internal compass keeps</i>
<i>the humpback on course,</i>

183
00:16:45,963 --> 00:16:48,090
<i>accurate to one degree. </i>

184
00:16:52,594 --> 00:16:57,558
<i>But it leads him out into the open ocean </i>
<i>where the fish and crustaceans he eats </i>

185
00:16:57,683 --> 00:16:59,351
<i>are hard to find. </i>

186
00:17:03,105 --> 00:17:05,983
<i>It's been weeks since he last ate. </i>

187
00:17:11,864 --> 00:17:13,073
<i>But then...</i>

188
00:17:13,198 --> 00:17:15,034
(DISTANT WHALE CALL)

189
00:17:15,409 --> 00:17:16,994
<i>...he hears something.</i>

190
00:17:20,873 --> 00:17:22,499
(DISTANT WHALE CALL)

191
00:17:22,583 --> 00:17:25,085
BENEDICT:<i> Using his body</i>
<i>like a giant microphone,</i>

192
00:17:26,336 --> 00:17:29,173
<i>sound vibrations</i>
<i>rush through his skeleton,</i>

193
00:17:30,340 --> 00:17:31,759
<i>straight to his head.</i>

194
00:17:34,344 --> 00:17:38,557
<i>The welcome calls of other whales, </i>
<i>hundreds of miles away. </i>

195
00:17:44,813 --> 00:17:47,608
<i>He homes in on a growing barrage </i>
<i>of sound. </i>

196
00:17:51,820 --> 00:17:55,365
<i>Finally, five weeks</i>
<i>after leaving Antarctica,</i>

197
00:17:56,241 --> 00:17:59,870
<i>he joins hundreds with other whales</i>
<i>for a monster feast. </i>

198
00:18:06,085 --> 00:18:09,171
<i>One of the largest humpback gatherings</i>
<i>on the planets, </i>

199
00:18:10,547 --> 00:18:12,216
<i>there are hundreds of them. </i>

200
00:18:19,181 --> 00:18:24,019
<i>This annual assembly has only</i>
<i>recently been discovered. </i>

201
00:18:25,354 --> 00:18:29,942
(WHALES CALLING)

202
00:18:31,485 --> 00:18:33,987
BENEDICT: <i>Three miles off</i>
<i>the coast of Africa,</i>

203
00:18:34,071 --> 00:18:36,115
<i>strong currents create an upwelling</i>

204
00:18:36,240 --> 00:18:40,119
<i>of nutrients and an explosion of life. </i>

205
00:18:44,540 --> 00:18:46,125
<i>In a single mouthful,</i>

206
00:18:46,750 --> 00:18:49,378
<i>he swallows</i>
<i>thousands of fish and shrimp,</i>

207
00:18:51,922 --> 00:18:54,299
<i>150,000 calories,</i>

208
00:18:55,551 --> 00:18:59,221
<i>that's the equivalent</i>
<i>of 600 chocolate bars.</i>

209
00:19:02,850 --> 00:19:04,184
<i>Once fully fed,</i>

210
00:19:05,144 --> 00:19:06,687
<i>he must leave his friends</i>

211
00:19:07,563 --> 00:19:09,648
<i>and head off alone</i>

212
00:19:10,691 --> 00:19:14,194
<i>to complete his epic journey north.</i>

213
00:19:18,073 --> 00:19:20,200
(BELLOWS)

214
00:19:20,617 --> 00:19:24,413
BENEDICT:<i> There are animals with the power</i>
<i>to travel right across the globe,</i>

215
00:19:25,455 --> 00:19:30,294
<i>but the most intrepid of all </i>
<i>is a creature you'd never expect. </i>

216
00:19:36,425 --> 00:19:38,135
<i>The British countryside...</i>

217
00:19:38,302 --> 00:19:40,804
(BIRDS CHIRPING)

218
00:19:43,098 --> 00:19:46,226
<i>...home to a baby cupboard spider,</i>

219
00:19:52,566 --> 00:19:55,360
<i>no bigger than a pinhead. </i>

220
00:20:00,324 --> 00:20:03,994
<i>She's got about 200 brothers and sisters. </i>

221
00:20:11,251 --> 00:20:16,381
<i>And her siblings have some</i>
<i>truly appalling table manners. </i>

222
00:20:18,967 --> 00:20:20,510
<i>These spiderlings</i>

223
00:20:21,678 --> 00:20:22,888
<i>are cannibals.</i>

224
00:20:27,517 --> 00:20:31,897
(SUSPENSEFUL MUSIC PLAYING)

225
00:20:39,529 --> 00:20:43,742
BENEDICT: <i>This is one family meal</i>
<i>you don't want to hang around for.</i>

226
00:20:49,498 --> 00:20:52,209
<i>Better get away as fast</i>

227
00:20:52,918 --> 00:20:54,378
<i>and as far as she can.</i>

228
00:21:03,178 --> 00:21:04,388
<i>The trouble is</i>

229
00:21:05,055 --> 00:21:07,849
<i>her siblings</i>
<i>have the same plan.</i>

230
00:21:08,725 --> 00:21:12,604
(MUSIC CONTINUES)

231
00:21:15,023 --> 00:21:17,985
BENEDICT: <i>And she just ran out of road.</i>

232
00:21:21,738 --> 00:21:23,991
<i>But when it comes to great escapes,</i>

233
00:21:24,658 --> 00:21:27,786
<i>this spider has an extraordinary skill.</i>

234
00:21:30,747 --> 00:21:32,666
(ELECTRICITY ZAPS)

235
00:21:32,874 --> 00:21:36,336
BENEDICT: <i>She fires out</i>
<i>negatively charged silk thread</i>

236
00:21:37,796 --> 00:21:40,215
<i>into the positively charged atmosphere.</i>

237
00:21:44,803 --> 00:21:46,805
<i>Opposites forces attract,</i>

238
00:21:49,891 --> 00:21:51,226
<i>pulling her up,</i>

239
00:21:53,520 --> 00:21:54,688
<i>up</i>

240
00:21:56,356 --> 00:21:57,441
<i>and away.</i>

241
00:22:01,862 --> 00:22:03,196
<i>Heading high,</i>

242
00:22:04,948 --> 00:22:06,700
<i>riding the wind,</i>

243
00:22:08,201 --> 00:22:10,412
<i>even cruising the jet stream,</i>

244
00:22:12,372 --> 00:22:14,916
<i>she can travel for thousands of miles. </i>

245
00:22:22,424 --> 00:22:23,884
<i>By ballooning,</i>

246
00:22:24,384 --> 00:22:27,429
<i>they've colonized</i>
<i>every corner of the Earth.</i>

247
00:22:32,768 --> 00:22:34,519
<i>At the mercy of the wind,</i>

248
00:22:35,437 --> 00:22:38,857
<i>she has no control over</i>
<i>where she touches down.</i>

249
00:22:45,572 --> 00:22:48,033
<i>But weighing less than a grain of sand,</i>

250
00:22:49,326 --> 00:22:50,994
<i>she doesn't even break the surface.</i>

251
00:23:01,838 --> 00:23:05,050
<i>She just deploys her magical silk</i>
<i>once more,</i>

252
00:23:08,387 --> 00:23:10,806
<i>and kitesurfs to safety.</i>

253
00:23:17,521 --> 00:23:20,816
<i>A new place she can call home.</i>

254
00:23:31,993 --> 00:23:35,455
<i>One animal's journey is all about timing. </i>

255
00:23:36,790 --> 00:23:39,209
<i>Waiting for the planets to align</i>

256
00:23:40,252 --> 00:23:42,754
<i>so it can transcend</i>
<i>from one world</i>

257
00:23:44,339 --> 00:23:45,757
<i>to another.</i>

258
00:23:51,263 --> 00:23:53,640
<i>A three-foot-long epaulette shark</i>

259
00:23:55,725 --> 00:23:58,353
<i>may not seem</i>
<i>the most adventurous traveler....</i>

260
00:24:03,108 --> 00:24:06,486
<i>He rarely even strays far</i>
<i>from his patch of reef.</i>

261
00:24:16,163 --> 00:24:18,373
<i>But on some special nights, </i>

262
00:24:21,001 --> 00:24:25,589
<i>heavenly bodies</i>
<i>turn his world upside down.</i>

263
00:24:28,508 --> 00:24:30,051
<i>At full moon,</i>

264
00:24:30,802 --> 00:24:35,182
<i>a spring tide pulls billions of gallons</i>
<i>of water off the reef,</i>

265
00:24:43,482 --> 00:24:45,108
<i>stranding creatures</i>

266
00:24:45,275 --> 00:24:48,111
<i>in a maze of tidal pools.</i>

267
00:24:51,781 --> 00:24:53,074
<i>Or worse.</i>

268
00:24:58,747 --> 00:25:00,123
<i>Left high and dry,</i>

269
00:25:00,749 --> 00:25:03,084
<i>a fish out of water soon suffocates.</i>

270
00:25:12,469 --> 00:25:13,512
<i>Unless...</i>

271
00:25:14,513 --> 00:25:15,680
<i>it's a super fish.</i>

272
00:25:19,184 --> 00:25:20,936
<i>A walking shark.</i>

273
00:25:25,440 --> 00:25:27,901
<i>And he's not just saving his skin,</i>

274
00:25:30,487 --> 00:25:31,947
<i>he's on the prowl.</i>

275
00:25:34,783 --> 00:25:37,369
<i>Heading towards rich hunting pools</i>

276
00:25:40,789 --> 00:25:43,542
<i>full of prey trapped by the tide.</i>

277
00:25:47,170 --> 00:25:50,507
<i>Forcing a jet of water</i>
<i>through his muscular gills,</i>

278
00:25:51,049 --> 00:25:53,885
<i>he hoovers up his cornered victims.</i>

279
00:26:15,073 --> 00:26:17,409
<i>But he's caught in a race against time.</i>

280
00:26:31,506 --> 00:26:34,968
<i>Oxygen levels in the pool</i>
<i>are falling fast. </i>

281
00:26:39,055 --> 00:26:41,391
<i>Pretty soon, he'll run out of energy. </i>

282
00:26:44,269 --> 00:26:46,354
<i>With an hour till the tide returns,</i>

283
00:26:47,272 --> 00:26:48,732
<i>he's close to death.</i>

284
00:26:57,282 --> 00:27:03,622
<i>But these extreme conditions trigger</i>
<i>an extraordinary physiological response.</i>

285
00:27:06,249 --> 00:27:07,751
<i>Slowing his breathing,</i>

286
00:27:09,461 --> 00:27:11,212
<i>reducing his heart rate,</i>

287
00:27:13,131 --> 00:27:15,759
<i>even shutting down part of his brain.</i>

288
00:27:18,136 --> 00:27:19,220
<i>He enters</i>

289
00:27:19,929 --> 00:27:21,806
<i>a self-induced coma....</i>

290
00:27:27,520 --> 00:27:29,230
<i>One last breath,</i>

291
00:27:29,981 --> 00:27:32,776
<i>and he can survive for an hour.</i>

292
00:27:39,324 --> 00:27:40,575
<i>But after that,</i>

293
00:27:41,493 --> 00:27:42,744
<i>his time is up.</i>

294
00:27:47,248 --> 00:27:50,168
<i>Finally, the tide turns,</i>

295
00:27:52,629 --> 00:27:55,465
<i>immersing him</i>
<i>in oxygen-rich waters.</i>

296
00:28:02,013 --> 00:28:04,057
<i>A miraculous resurrection.</i>

297
00:28:12,649 --> 00:28:15,318
<i>Perhaps the most impossible journeys</i>
<i>of all</i>

298
00:28:15,860 --> 00:28:18,697
<i>are made by those</i>
<i>who can't even move.</i>

299
00:28:24,327 --> 00:28:26,621
<i>The secret to how plants spread</i>

300
00:28:28,540 --> 00:28:30,041
<i>is seeds.</i>

301
00:28:34,421 --> 00:28:36,798
<i>All the ingredients for new life,</i>

302
00:28:37,882 --> 00:28:39,426
<i>packed and ready to go.</i>

303
00:28:41,720 --> 00:28:44,180
<i>Some have evolved explosive mechanisms...</i>

304
00:28:44,848 --> 00:28:46,141
(EXPLODES)

305
00:28:46,391 --> 00:28:48,685
<i>...others harness the wind.</i>

306
00:28:53,773 --> 00:28:55,358
<i>But one cunning plant</i>

307
00:28:56,484 --> 00:28:58,903
<i>simply makes someone else</i>
<i>do all the legwork.</i>

308
00:29:04,117 --> 00:29:07,912
<i>A female dung beetle </i>
<i>on the African plains. </i>

309
00:29:11,624 --> 00:29:15,170
<i>There's only one thing that will </i>
<i>make her go to extraordinary lengths: </i>

310
00:29:15,920 --> 00:29:17,172
(STOMACH GRUMBLES)

311
00:29:21,801 --> 00:29:25,597
<i>the sweet scent of antelope droppings.</i>

312
00:29:27,599 --> 00:29:29,517
<i>Perfect food for her young.</i>

313
00:29:32,687 --> 00:29:34,230
<i>Using her antennae,</i>

314
00:29:36,608 --> 00:29:39,235
<i>she selects the juiciest morsel.</i>

315
00:29:42,113 --> 00:29:43,490
<i>It smells like it,</i>

316
00:29:48,203 --> 00:29:49,454
<i>it looks like it,</i>

317
00:29:55,376 --> 00:29:57,253
<i>it even rolls like it.</i>

318
00:30:00,924 --> 00:30:03,510
<i>But this poop is an imposter.</i>

319
00:30:06,638 --> 00:30:09,098
<i>It's so convincingly like the real thing;</i>

320
00:30:09,682 --> 00:30:11,643
<i>she's prepared to fight for it. </i>

321
00:30:31,579 --> 00:30:35,667
<i>Victorious, she heads off </i>
<i>to stash her prize away </i>

322
00:30:35,750 --> 00:30:36,960
<i>from the competition.</i>

323
00:30:41,089 --> 00:30:43,466
<i>But she's been duped.</i>

324
00:30:45,802 --> 00:30:48,012
<i>She thinks she's hiding it,</i>

325
00:30:49,889 --> 00:30:52,517
<i>but really she's planting it.</i>

326
00:30:56,563 --> 00:30:58,606
<i>She's nothing more than a vehicle</i>

327
00:30:59,649 --> 00:31:01,317
<i>in the incredible adventure</i>

328
00:31:02,277 --> 00:31:04,279
<i>of the cunning elephant reed.</i>

329
00:31:15,164 --> 00:31:18,710
<i>One animal traveler takes the journey </i>
<i>of a lifetime,</i>

330
00:31:19,836 --> 00:31:22,922
<i>just to get back to where it started.</i>

331
00:31:29,137 --> 00:31:30,346
<i>This nymph</i>

332
00:31:31,055 --> 00:31:33,892
<i>has been hanging out</i>
<i>in a Hungarian riverbed.</i>

333
00:31:36,936 --> 00:31:38,855
<i>For the last three years,</i>

334
00:31:39,772 --> 00:31:41,232
<i>she's been building strength</i>

335
00:31:42,066 --> 00:31:44,235
<i>for an incredible journey.</i>

336
00:31:47,155 --> 00:31:49,574
<i>When the water temperature is just right,</i>

337
00:31:56,039 --> 00:31:58,124
<i>she departs one world</i>

338
00:31:59,626 --> 00:32:02,503
<i>to enter another.</i>

339
00:32:06,841 --> 00:32:09,761
<i>It's a magical transformation.</i>

340
00:32:14,140 --> 00:32:16,142
<i>A mayfly is born.</i>

341
00:32:17,602 --> 00:32:20,855
<i>-And not just one...</i>
-(CHIRPING)

342
00:32:21,564 --> 00:32:23,942
<i>...thousands emerge every minute.</i>

343
00:32:24,609 --> 00:32:28,988
(CHIRPING)

344
00:32:40,291 --> 00:32:42,377
BENEDICT:
<i>Though many are eaten by predators,</i>

345
00:32:45,213 --> 00:32:47,215
<i>there is safety in numbers.</i>

346
00:32:51,719 --> 00:32:55,139
<i>But numbers soon become </i>
<i>her greatest challenge. </i>

347
00:32:57,225 --> 00:32:59,852
<i>She's mobbed by an army </i>
<i>of male suitors. </i>

348
00:33:06,526 --> 00:33:10,154
<i>Weighed down with 8,000 fertilized eggs,</i>

349
00:33:10,989 --> 00:33:12,657
<i>she needs to lay soon.</i>

350
00:33:16,202 --> 00:33:19,163
<i>This is the best place for her young</i>
<i>to grow</i>

351
00:33:20,915 --> 00:33:22,291
<i>but if she laid here,</i>

352
00:33:22,792 --> 00:33:24,794
<i>the current would carry her eggs away.</i>

353
00:33:28,631 --> 00:33:31,092
<i>She has to make it further upstream.</i>

354
00:33:42,311 --> 00:33:45,690
<i>Her polarized vision </i>
<i>picks up light reflecting off the river. </i>

355
00:33:47,108 --> 00:33:50,945
<i>A shimmering path leading </i>
<i>to her final destination. </i>

356
00:33:54,240 --> 00:33:57,285
<i>In just a few hours, </i>
<i>she travels six miles.</i>

357
00:33:58,953 --> 00:34:01,039
(WINGS FLUTTERING)

358
00:34:01,289 --> 00:34:05,126
BENEDICT:<i> Close to death, she reaches</i>
<i>the same stretch of river</i>

359
00:34:05,418 --> 00:34:07,086
<i>where her life began. </i>

360
00:34:09,922 --> 00:34:12,133
<i>The perfect place to lay</i>

361
00:34:13,259 --> 00:34:15,261
<i>so her eggs can drift downstream</i>

362
00:34:15,970 --> 00:34:18,514
<i>and hatch in exactly the same spot</i>

363
00:34:19,057 --> 00:34:20,266
<i>where she grew up.</i>

364
00:34:24,687 --> 00:34:26,314
<i>As her life ends,</i>

365
00:34:27,190 --> 00:34:28,524
<i>others begin.</i>

366
00:34:32,653 --> 00:34:35,364
<i>Now, her offspring start</i>
<i>their own voyage</i>

367
00:34:37,158 --> 00:34:40,495
<i>all the way back</i>
<i>to where it began.</i>

368
00:34:52,381 --> 00:34:54,300
<i>When starting a new journey,</i>

369
00:34:55,760 --> 00:34:57,845
<i>sometimes it's the first step</i>

370
00:34:59,597 --> 00:35:02,308
<i>that's the most terrifying of all. </i>

371
00:35:06,646 --> 00:35:09,232
<i>After 20 hours trying to break free...</i>

372
00:35:09,774 --> 00:35:11,526
(CRACKS)

373
00:35:19,408 --> 00:35:24,163
<i>...a guillemot chick's first view</i>
<i>of the world is this...</i>

374
00:35:24,580 --> 00:35:27,875
(BIRDS SQUAWKING)

375
00:35:33,714 --> 00:35:36,759
BENEDICT: <i>1,000 feet up.</i>

376
00:35:39,345 --> 00:35:42,390
<i>It's like peering off</i>
<i>the top of the Empire State Building.</i>

377
00:35:46,727 --> 00:35:49,730
<i>But why be born in such a dangerous place?</i>

378
00:35:53,192 --> 00:35:57,280
<i>This Icelandic cliff is inaccessible</i>
<i>to most predators. </i>

379
00:35:58,364 --> 00:36:00,116
<i>A safe haven to grow up in.</i>

380
00:36:01,284 --> 00:36:03,035
<i>But in just three weeks,</i>

381
00:36:03,244 --> 00:36:05,204
<i>it will be time to leave the nest.</i>

382
00:36:06,372 --> 00:36:09,625
<i>And this chick will face</i>
<i>a life-or-death decision.</i>

383
00:36:14,505 --> 00:36:17,258
<i>Her bond with her parents</i>
<i>is already strong. </i>

384
00:36:19,510 --> 00:36:22,221
<i>It started long before she even hatched.</i>

385
00:36:24,098 --> 00:36:27,018
<i>Responding to her first gentle calls,</i>

386
00:36:28,519 --> 00:36:30,730
<i>-her parents talked to her...</i>
-(BIRD SQUAWKS)

387
00:36:30,897 --> 00:36:32,565
<i>...inside the egg.</i>

388
00:36:33,149 --> 00:36:35,943
(BIRDS SQUAWKING)

389
00:36:38,029 --> 00:36:40,740
-(MUFFLED SQUAWK)
<i>-These early conversations</i>

390
00:36:42,074 --> 00:36:46,621
<i>ensured the newborn already recognizes</i>
<i>and trusts Mom and Dad.</i>

391
00:36:48,664 --> 00:36:52,418
(SQUAWKING)

392
00:36:55,588 --> 00:36:58,382
BENEDICT: <i>Her parents work tirelessly</i>
<i>to feed her up</i>

393
00:36:58,841 --> 00:37:01,052
<i>in preparation</i>
<i>for the journey ahead.</i>

394
00:37:06,057 --> 00:37:07,475
<i>But as the weeks pass,</i>

395
00:37:08,017 --> 00:37:11,020
<i>it gets harder</i>
<i>to satisfy her growing appetite.</i>

396
00:37:18,986 --> 00:37:20,238
(SQUAWKS)

397
00:37:23,115 --> 00:37:26,118
BENEDICT: <i>And now this clifftop home</i>
<i>that protected her</i>

398
00:37:26,953 --> 00:37:28,496
<i>has been discovered...</i>

399
00:37:30,957 --> 00:37:32,375
<i>by ravens.</i>

400
00:37:32,750 --> 00:37:35,211
(SQUAWKING)

401
00:37:35,544 --> 00:37:38,297
BENEDICT: <i>Predators kill</i>
<i>up to 70 percent of chicks</i>

402
00:37:39,966 --> 00:37:43,219
<i>and parents are almost defenseless</i>
<i>against the threat.</i>

403
00:37:46,138 --> 00:37:48,891
<i>This time, the chick gets lucky.</i>

404
00:37:52,144 --> 00:37:55,231
<i>But she needs to leave</i>
<i>before the ravens return.</i>

405
00:38:01,195 --> 00:38:02,363
<i>The problem is,</i>

406
00:38:03,281 --> 00:38:04,991
<i>without adult feathers,</i>

407
00:38:05,700 --> 00:38:06,826
<i>she can't fly.</i>

408
00:38:15,710 --> 00:38:19,672
<i>Her father encourages her to jump. </i>

409
00:38:20,256 --> 00:38:22,591
(SQUAWKING)

410
00:38:23,384 --> 00:38:26,929
<i>It's a vertical drop </i>
<i>of more than one-hundred stories.... </i>

411
00:38:37,648 --> 00:38:40,109
<i>Trusting him completely,</i>

412
00:38:40,693 --> 00:38:43,654
<i>the chick takes a leap of faith....</i>

413
00:38:44,447 --> 00:38:46,532
(SQUAWKS)

414
00:38:54,540 --> 00:38:58,085
(TENSE MUSIC PLAYING)

415
00:39:06,510 --> 00:39:08,721
<i>The chicks flapping seems futile. </i>

416
00:39:15,603 --> 00:39:18,856
<i>But it's just enough to slow her down</i>

417
00:39:20,316 --> 00:39:23,110
<i>and steer her away from the jagged rocks.</i>

418
00:39:23,652 --> 00:39:26,238
(MUSIC CONTINUES)

419
00:39:49,345 --> 00:39:52,264
<i>Her downy feathers soften the landing. </i>

420
00:39:55,226 --> 00:39:59,230
<i>This seemingly impossible journey</i>
<i>is vital to her survival. </i>

421
00:39:59,605 --> 00:40:01,148
(CHIRPING)

422
00:40:01,273 --> 00:40:05,403
BENEDICT:<i> Now out at sea,</i>
<i>Dad can lead her to food.</i>

423
00:40:11,409 --> 00:40:13,411
<i>She will face many more obstacles,</i>

424
00:40:14,995 --> 00:40:16,997
<i>but with extraordinary bravery,</i>

425
00:40:17,998 --> 00:40:19,125
<i>she can make it through.</i>

426
00:40:21,252 --> 00:40:24,755
(DRAMATIC MUSIC PLAYING)

427
00:40:36,142 --> 00:40:38,853
BENEDICT: <i>When animals can tap into</i>
<i>remarkable senses</i>

428
00:40:41,021 --> 00:40:42,773
<i>and supernatural skills... </i>

429
00:40:47,027 --> 00:40:48,362
<i>crossing the globe,</i>

430
00:40:50,739 --> 00:40:52,700
<i>even moving between worlds</i>

431
00:40:54,368 --> 00:40:55,369
<i>to find a mate,</i>

432
00:40:57,288 --> 00:40:58,330
<i>safety</i>

433
00:40:59,081 --> 00:41:00,249
<i>and food,</i>

434
00:41:01,333 --> 00:41:04,170
<i>they become truly unstoppable.</i>

435
00:41:05,713 --> 00:41:07,715
<i>If you think you know nature,</i>

436
00:41:09,717 --> 00:41:11,010
<i>think again.</i>

437
00:41:12,470 --> 00:41:17,391
(THEME MUSIC PLAYING)

438
00:41:35,534 --> 00:41:37,536
(THEME MUSIC ENDS)