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‎2021年

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‎在全世界的注視中，中國野象一家

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‎在經歷四百公里長途跋涉後
‎筋疲力盡地睡去

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‎經歷了有記錄以來最嚴重的乾旱

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‎牠們被迫離開原始森林

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‎尋找新的家園

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‎穿越了大片農田

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‎牠們依然沒有停步的跡象

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‎但牠們接下來的行為
‎卻令所有人都很驚訝

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‎野象一家從一條五車道公路下方穿過

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‎前往昆明市

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‎沒過幾天，象群便到達市區範圍

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‎牠們很快就進入了一個可怕的新世界

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‎全家既害怕又迷茫

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‎牠們別無選擇

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‎只得轉身踏上漫漫歸途

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‎意外地，儘管大象造成了破壞

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‎當地人不僅十分包容，還出手相助

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‎耗資數十萬美元引導牠們平安返家

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‎在將近兩年之後

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‎經過一千多公里的長途跋涉

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‎疲憊的流浪者們
‎終於回到了南方的森林

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‎當地的乾旱已見緩和

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‎牠們克服了重重艱險

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‎這段家族故事也有了一個圓滿結局

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‎故事也說明，當動物面臨劇變之時

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‎其遷移的衝動可能會壓倒一切

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‎（第四章 自由徜徉）

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‎圍繞太陽轉動的地球保持傾斜

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‎在二月

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‎這種傾斜將夏日帶到地球的南端

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‎不過，在世界的底端
‎夏季並非總是顯著

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‎即便在盛夏

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‎南極的氣溫也幾乎不會升至冰點以上

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‎不過，24小時不間斷日照

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‎也能帶來足夠的熱量
‎融化陸地周圍的海冰

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‎對巴布亞企鵝而言，這一點很重要

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‎牠們需要到陸地上繁殖

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‎過去數週
‎牠們的生活受到口腹之慾的驅使

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‎每日通勤30公里

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‎到達海上覓食地點

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‎填飽了肚子，如今要回去哺餵雛鳥

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‎在海中奔波一整日

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‎一時半刻還站不穩

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‎巴布亞企鵝必須

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‎在無冰的岩石上產蛋育幼

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‎所以，回家的衝刺階段
‎往往要沿坡蹣跚向上

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‎到達強風吹拂的崖頂

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‎八週前孵化的雛鳥
‎如今幾乎已完全長大

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‎在南極洲短暫的夏日

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‎冬季再度到來前，羽毛剛好可以長成

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‎越是肥肥的雛鳥，需要的食物就越多

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‎有些家長似乎不願意放縱子女

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‎但這種行為亦有其價值

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‎讓雛鳥以勞獲食

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‎父母便可以判斷孩子們的力量…

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‎耐力

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‎以及協調性

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‎食物引誘雛鳥下水

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‎不過，牠們並不怎麼喜歡

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‎看來，即便對企鵝來說

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‎初涉冷水也需要勇氣

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‎然而，只要有一隻帶頭

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‎其餘便會追隨

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‎有遮蔽的淺池裏
‎可以安全測試防水皮毛

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‎由於當地夏季短暫

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‎牠們很快就會需要用皮毛

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‎不久之後

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‎南極洲的海域將會再次被冰層覆蓋

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‎所以，年幼的雛鳥若要進食
‎就必須馬上前往開放水域

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‎但牠們很緊張

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‎這也情有可原

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‎誰會希望和
‎身長三米的豹海豹同在一片水域？

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‎而且還不止一隻

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‎而是三隻

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‎果如其名，牠們用伏擊的方式獵食

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‎巴布亞小企鵝很容易成為目標

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‎但儘管有危險

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‎企鵝的進食需要也很迫切

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‎巴布亞企鵝是世界上最敏捷的企鵝

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‎如果能避免遭受伏擊，就有一線生機

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‎為安全起見，小企鵝成群行動

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‎然而在混亂中
‎一隻小企鵝與大家走散

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‎現在是一對一

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‎企鵝唯一的希望

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‎就是靠其出色的敏捷度和耐力

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‎所以追逐越久，就越有機會

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‎這隻幸運的小企鵝可以和同伴團聚了

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‎開闊的海洋正等待著牠們

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‎（二月）

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‎二月

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‎地球的北端遠離太陽

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‎所以，北極的隆冬時節

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‎黑夜幾乎連續不斷

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‎唯一的光源來自極光

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‎這些空靈之象的成因

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‎是來自太陽的帶電粒子

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‎與地球的磁場相互作用

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‎就在這段時間，無數動物開始遠行

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‎前往這些北部區域

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‎向南五千公里

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‎雪雁的年度遷徙剛剛啓程

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‎經驗豐富的年長成員在前帶路

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‎一路循着向北延伸的融雪飛行

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‎從墨西哥灣

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‎飛回位於北極的繁殖地

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‎牠們將到達凍原

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‎夏季的長晝為養育幼鳥

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‎創造了絕佳的條件

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‎牠們利用湖及河等自然地標

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‎防止偏離路線

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‎而時至今日

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‎牠們身下的世界

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‎已與祖先時代截然不同

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‎昔日無盡的稀樹草原

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‎如今變成了工業農田

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‎但這對雪雁來說不一定是壞事

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‎想要到達北極

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‎雁群一路上需要時常補充能量

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‎所以，美國產糧地區的農田

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‎就成了重要的休息站

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‎幾乎取之不盡的食物

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‎使得雪雁的數量

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‎在過去50年間翻了一倍

125
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‎然而，成為世界數量之最
‎也要付出代價

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‎在現代世界，眼見不一定為實

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‎每年有25萬隻雪雁遭射殺

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‎（墨西哥灣）

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‎一路上在許多地方

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‎雪雁都遭到獵人覬覦

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‎但在美國的兩條遷徙路線之間

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‎有一片濕地，牠們在這裏得到了保護

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‎密蘇里州的路易斯布拉弗斯

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‎這是雪雁北上旅程中最重要的

135
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‎停靠站之一

136
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‎駐足多久取決於天氣

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‎二月，冰冷寒風從北極吹來

138
00:15:28,802 --> 00:15:31,764
‎可能會導致溫度突然下降

139
00:15:38,354 --> 00:15:40,105
‎如果這裏結冰

140
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‎前方所去之處的條件將更為惡劣

141
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‎於是，所有向北飛的行程都暫停

142
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‎雖然名為雪雁

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‎但牠們在冰上似乎並不自如

144
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‎隨着湖邊結冰

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‎雁群在湖心大量聚集

146
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‎這裏越是熱鬧，活動的空間就越小

147
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‎這正合了另一位訪客的心意

148
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‎白頭海鵰跨越北美

149
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‎來到此處

150
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‎牠們算準時機，與雪雁在此相遇

151
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‎雪雁體型太大，無法在空中捕捉

152
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‎於是，白頭海鵰採取不同的狩獵策略

153
00:17:16,243 --> 00:17:19,955
‎牠們飛向雁群，使其受驚飛上天

154
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‎雁群越是擁擠，越是對海鵰有利

155
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‎慌亂中，雪雁相互擠碰

156
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‎肢體受傷

157
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‎受傷的雪雁在冰上孤立無援

158
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‎也無法逃進水中

159
00:18:06,460 --> 00:18:11,757
‎只要寒流持續
‎所有的動物都會受到威脅

160
00:18:12,549 --> 00:18:16,929
‎牠們的遷徙之路依然被冰雪封阻

161
00:18:26,063 --> 00:18:30,317
‎回到北極，日照開始逐漸增強

162
00:18:32,361 --> 00:18:33,695
‎但在二月下旬

163
00:18:33,779 --> 00:18:36,907
‎陽光僅勉強在地平線露面

164
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‎在這種嚴寒條件下，食物所剩無幾

165
00:18:42,246 --> 00:18:44,915
‎大多數動物都向南撤退

166
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‎或進入休眠狀態

167
00:18:54,007 --> 00:18:56,301
‎而這位哪一種都不是

168
00:18:57,886 --> 00:19:01,932
‎猞猁是世界上住在最北方的貓科動物

169
00:19:08,605 --> 00:19:12,651
‎由於防寒保護極佳，猞猁不會南撤

170
00:19:15,654 --> 00:19:19,950
‎但牠可能得長途跋涉才能找到食物

171
00:19:28,125 --> 00:19:30,002
‎有紀錄顯示

172
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‎曾有一隻猞猁在一年內
‎走了三千多公里的路

173
00:19:35,340 --> 00:19:37,551
‎遠超所有人的想像

174
00:19:37,634 --> 00:19:40,888
‎（北太平洋）

175
00:19:47,269 --> 00:19:52,649
‎這隻大貓幾乎只依賴一種獵物

176
00:19:54,401 --> 00:19:58,113
‎而此時，這種獵物十分少見

177
00:20:02,367 --> 00:20:04,161
‎白靴兔

178
00:20:09,583 --> 00:20:12,461
‎發現目標只是挑戰的一半

179
00:20:36,526 --> 00:20:39,988
‎猞猁每隔幾日便需要進食

180
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‎所以，牠從未停止搜尋

181
00:20:56,129 --> 00:20:57,214
‎牠很走運

182
00:20:58,298 --> 00:21:00,759
‎又聞到了一陣獵物的味道

183
00:21:10,602 --> 00:21:12,646
‎野兔緊繃神經

184
00:21:14,481 --> 00:21:16,817
‎信賴自己的僞裝

185
00:21:20,320 --> 00:21:23,615
‎猞猁不能在長跑中追到獵物

186
00:21:23,699 --> 00:21:25,784
‎所以，牠必須靠近

187
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‎終於能吃一餐了

188
00:21:54,438 --> 00:21:58,900
‎（三月）

189
00:22:00,944 --> 00:22:05,032
‎隨着北半球再次面對太陽傾斜

190
00:22:05,115 --> 00:22:07,492
‎三月白晝變長

191
00:22:07,576 --> 00:22:11,413
‎叉角羚踏上了年度遷徙之旅

192
00:22:16,877 --> 00:22:20,964
‎牠們的旅程將從懷俄明州南部
‎被雪覆蓋的平原開始

193
00:22:21,048 --> 00:22:24,426
‎到達洛磯山脈的茂密山谷

194
00:22:24,509 --> 00:22:26,136
‎在那裏生育

195
00:22:34,353 --> 00:22:38,440
‎然而如今
‎牠們的遷徙之路已經變得面目全非

196
00:22:40,150 --> 00:22:44,613
‎首先，牠們要想辦法穿越油田和氣田

197
00:22:47,908 --> 00:22:49,910
‎這隻雄性試了試運氣

198
00:23:06,802 --> 00:23:09,012
‎叉角羚十分謹慎

199
00:23:09,763 --> 00:23:12,474
‎尤其是遇到人類時

200
00:23:30,700 --> 00:23:32,411
‎目前為止，一切順利

201
00:23:33,495 --> 00:23:35,747
‎現在輪到其牠同伴了

202
00:23:39,292 --> 00:23:41,503
‎然後…上！

203
00:23:55,600 --> 00:23:57,436
‎在接下來的幾個月裏

204
00:23:57,519 --> 00:23:59,396
‎牠們將跋涉兩百公里

205
00:23:59,479 --> 00:24:02,190
‎到達北方的產犢之地

206
00:24:03,275 --> 00:24:07,028
‎每一年，這段旅程都變得更加艱辛

207
00:24:11,116 --> 00:24:14,119
‎用來防止家畜逃跑的圍欄

208
00:24:14,703 --> 00:24:18,206
‎也同樣有效防止叉角羚進入

209
00:24:33,472 --> 00:24:36,308
‎但這是牠們祖先所走的路

210
00:24:37,017 --> 00:24:38,602
‎所以牠們堅持不懈

211
00:24:52,741 --> 00:24:58,205
‎最近，一頭叉角羚在北遷之路上

212
00:24:58,705 --> 00:25:00,373
‎越過了150處圍欄

213
00:25:09,799 --> 00:25:12,844
‎但叉角羚與鐵絲網

214
00:25:14,054 --> 00:25:16,723
‎並非相見甚歡

215
00:25:21,978 --> 00:25:25,023
‎而圍欄絕不是叉角羚遇到的唯一問題

216
00:25:30,153 --> 00:25:34,324
‎更危險的是
‎穿插其遷徙路線的一條條公路

217
00:25:51,007 --> 00:25:54,469
‎牠們或許是美洲最敏捷的陸地動物…

218
00:25:58,473 --> 00:26:00,767
‎但也並非總是能閃避汽車

219
00:26:05,814 --> 00:26:08,692
‎過去二百年間的各種變化

220
00:26:09,192 --> 00:26:13,488
‎使叉角羚數量銳減九成

221
00:26:16,199 --> 00:26:18,660
‎但也有好消息

222
00:26:22,455 --> 00:26:25,333
‎叉角羚對於祖先的遷徙路線一貫堅持

223
00:26:25,417 --> 00:26:30,088
‎使得人們可以
‎在主要路過地點建造天橋

224
00:26:30,714 --> 00:26:34,426
‎幾乎杜絕了區內的公路死亡事故

225
00:26:39,180 --> 00:26:44,102
‎羚群繼續向北
‎到達了真正的狂野西部

226
00:26:46,688 --> 00:26:50,483
‎在這裏，牠們要面對的不是人為障礙

227
00:26:50,567 --> 00:26:52,027
‎而是自然障礙

228
00:27:04,956 --> 00:27:07,042
‎積雪正在融化

229
00:27:07,125 --> 00:27:10,629
‎說明牠們會如期到達產犢地

230
00:27:10,712 --> 00:27:13,465
‎按時生產

231
00:27:22,057 --> 00:27:25,268
‎但季節變化也會帶來問題

232
00:27:25,935 --> 00:27:31,066
‎懷俄明州融水奔湧的
‎格羅文特雷河就在眼前

233
00:27:33,401 --> 00:27:36,696
‎叉角羚必須穿過這條河
‎才能到達繁殖地

234
00:27:36,780 --> 00:27:39,032
‎不過，牠們似乎很緊張

235
00:27:40,700 --> 00:27:43,244
‎不是因為河流本身

236
00:27:43,328 --> 00:27:46,581
‎而是因為對岸可能潛藏的天敵

237
00:28:04,182 --> 00:28:05,308
‎在水裏

238
00:28:05,809 --> 00:28:09,479
‎牠們在陸地上的速度沒有意義

239
00:28:14,901 --> 00:28:17,696
‎但如野狼和美洲獅之類的天敵

240
00:28:17,779 --> 00:28:20,573
‎如今因獵殺已幾乎絕跡

241
00:28:20,657 --> 00:28:23,410
‎所以在此遭受攻擊的可能性很小

242
00:28:26,162 --> 00:28:28,915
‎只是，叉角羚對此並不知情

243
00:28:33,920 --> 00:28:36,047
‎小心駛得萬年船

244
00:28:39,259 --> 00:28:40,635
‎謹慎讓牠們走了這麼遠

245
00:28:51,730 --> 00:28:53,815
‎出發幾週後

246
00:28:54,315 --> 00:28:57,527
‎牠們終於抵達繁殖地

247
00:28:58,027 --> 00:29:01,030
‎洛磯山脈的肥沃山谷

248
00:29:04,075 --> 00:29:08,788
‎（北太平洋）

249
00:29:08,872 --> 00:29:11,207
‎墨西哥的下加利福尼亞半島

250
00:29:11,291 --> 00:29:14,419
‎不會經歷北方寒冷的冬天

251
00:29:16,755 --> 00:29:20,425
‎所以，每年此時海洋的和暖氣溫

252
00:29:20,925 --> 00:29:23,595
‎為世界上最優秀的長途旅者

253
00:29:23,678 --> 00:29:27,182
‎提供了絕佳的季節性度假勝地

254
00:29:32,729 --> 00:29:34,564
‎灰鯨

255
00:29:40,195 --> 00:29:41,905
‎時值三月中

256
00:29:41,988 --> 00:29:46,326
‎六週前，這隻雌鯨剛剛在此生產

257
00:29:50,038 --> 00:29:54,042
‎避風水域十分溫暖，沒有天敵出沒

258
00:29:54,793 --> 00:29:57,003
‎非常適合育嬰

259
00:30:00,381 --> 00:30:03,343
‎但這種完美是有代價的

260
00:30:06,346 --> 00:30:11,059
‎母親沒有食物
‎而牠從十二月起便一直在此

261
00:30:14,312 --> 00:30:16,856
‎所以，一旦幼鯨長得足夠強壯

262
00:30:16,940 --> 00:30:19,901
‎母親就會帶領牠向北遠遊八千公里

263
00:30:19,984 --> 00:30:23,571
‎前往牠們
‎位於阿拉斯加白令海的覓食地點

264
00:30:25,073 --> 00:30:28,243
‎這是哺乳類動物進行的最遠距遷徙

265
00:30:35,583 --> 00:30:38,837
‎幸好，牠的孩子長得很快

266
00:30:44,717 --> 00:30:47,887
‎每日攝入超過兩百公升乳汁

267
00:30:47,971 --> 00:30:51,182
‎這隻一噸重的幼鯨充滿活力

268
00:30:56,771 --> 00:31:01,526
‎幸好，母親知道
‎可以讓牠釋放能量的地方

269
00:31:04,320 --> 00:31:05,488
‎就是這裏

270
00:31:14,414 --> 00:31:17,792
‎潟湖中間的淺沙洲

271
00:31:19,377 --> 00:31:22,422
‎顯然，這裏是個好地方

272
00:31:25,174 --> 00:31:28,136
‎滾滾潮水湧上淺灘

273
00:31:28,219 --> 00:31:30,346
‎形成和緩的水流

274
00:31:30,430 --> 00:31:33,558
‎吸引潟湖中的鯨魚

275
00:31:37,478 --> 00:31:40,982
‎這是幼鯨第一次接觸鯨魚社會

276
00:31:41,900 --> 00:31:43,985
‎牠似乎有點害羞

277
00:31:46,362 --> 00:31:48,114
‎最好還是緊跟媽媽

278
00:31:54,537 --> 00:31:56,164
‎沙洲是練習北上長途之旅

279
00:31:56,247 --> 00:32:00,752
‎必備的游泳技能的絕佳場所

280
00:32:02,754 --> 00:32:05,590
‎水母順水流而來

281
00:32:05,673 --> 00:32:07,884
‎而牠卻逆水而行

282
00:32:11,137 --> 00:32:15,058
‎將其當作水下跑步機，來增強體力

283
00:32:24,150 --> 00:32:29,322
‎每年有超過一千隻灰鯨遷入這個潟湖

284
00:32:32,075 --> 00:32:35,078
‎但並非全是攜幼的母親

285
00:32:38,247 --> 00:32:41,793
‎許多雄性也遠道來此

286
00:32:41,876 --> 00:32:44,170
‎希望尋找交配對象

287
00:32:48,800 --> 00:32:51,844
‎攜幼的母親們完全沒有興趣

288
00:32:52,470 --> 00:32:55,139
‎但多情的雄性並不氣餒

289
00:33:01,771 --> 00:33:05,566
‎轉身遊開似乎只會令牠更加主動

290
00:33:15,493 --> 00:33:17,829
‎跨越半個地球來到這裏

291
00:33:17,912 --> 00:33:21,082
‎自然不會輕易認輸

292
00:33:24,544 --> 00:33:28,506
‎此時，牠似乎將怨氣發泄在幼鯨身上

293
00:33:28,589 --> 00:33:31,426
‎強逼牠潛下，遠離表面

294
00:33:41,060 --> 00:33:43,771
‎終於，這隻雄性認清了狀況

295
00:33:49,152 --> 00:33:51,863
‎兩母子要繼續北上了

296
00:33:53,281 --> 00:33:55,199
‎自從三個月前到達此地後

297
00:33:55,283 --> 00:33:58,244
‎母親的體重已經減輕了三分之一

298
00:33:59,662 --> 00:34:03,541
‎所以，牠必須踏上漫漫歸途
‎回到自己的覓食地點

299
00:34:05,710 --> 00:34:09,088
‎幼鯨若想走完這段旅程
‎還需要一點運氣

300
00:34:11,507 --> 00:34:13,926
‎三分之一的灰鯨幼鯨

301
00:34:14,927 --> 00:34:16,846
‎無法抵達目的地

302
00:34:24,062 --> 00:34:27,565
‎（大西洋 赤道）

303
00:34:27,648 --> 00:34:31,319
‎地球的傾斜驅動着各類遷徙

304
00:34:31,861 --> 00:34:36,407
‎但即便在甚少受地軸傾斜
‎季節性影響的赤道地帶

305
00:34:36,491 --> 00:34:40,703
‎有些動物也在不斷地遷移

306
00:34:51,714 --> 00:34:53,132
‎行軍蟻

307
00:34:57,929 --> 00:35:01,974
‎每天，行軍蟻為覓食而奔波的距離

308
00:35:02,058 --> 00:35:03,768
‎都相當於人類的馬拉松

309
00:35:13,111 --> 00:35:18,449
‎這種螞蟻專門捕捉其牠昆蟲的幼蟲

310
00:35:27,959 --> 00:35:29,836
‎滿載獵物的工蟻

311
00:35:29,919 --> 00:35:33,047
‎在同伴架設的活動橋樑協助下

312
00:35:33,131 --> 00:35:34,632
‎通過落葉層的間隙

313
00:35:41,389 --> 00:35:46,394
‎信息素的踪跡將牠們引向臨時總部

314
00:35:51,858 --> 00:35:52,900
‎蟻營

315
00:35:53,734 --> 00:35:58,489
‎完全由螞蟻身體組成的巢穴

316
00:36:01,868 --> 00:36:03,953
‎在這道活蟻牆之後

317
00:36:04,036 --> 00:36:06,914
‎隱藏着蟻群的指揮中心

318
00:36:06,998 --> 00:36:09,667
‎蟻后和牠的新生兒

319
00:36:10,877 --> 00:36:14,589
‎過去兩週，整個蟻營都留在這裏

320
00:36:15,131 --> 00:36:17,383
‎但情況即將改變

321
00:36:32,023 --> 00:36:34,317
‎由日轉夜

322
00:36:34,400 --> 00:36:37,278
‎一個信號在蟻群中傳播

323
00:36:40,448 --> 00:36:44,619
‎一種化學信號從蟻營深處釋出

324
00:36:47,413 --> 00:36:48,831
‎訊息很明確

325
00:36:50,124 --> 00:36:51,876
‎是時候動身了

326
00:36:59,175 --> 00:37:02,011
‎這些小昆蟲胃口很大

327
00:37:03,387 --> 00:37:06,265
‎蟻營周圍森林中的活獵物已被吃光

328
00:37:07,350 --> 00:37:11,187
‎如今，牠們必須尋找新的覓食地點

329
00:37:16,484 --> 00:37:19,654
‎工蟻沿著一條覓食的主路徑

330
00:37:19,737 --> 00:37:22,907
‎運輸剛孵化的幼蟲…

331
00:37:25,534 --> 00:37:27,703
‎邊緣處有衛兵把守

332
00:37:31,457 --> 00:37:35,002
‎這個蟻群的螞蟻數量達到了50萬隻

333
00:37:36,462 --> 00:37:38,631
‎一隻也不會被丟下

334
00:37:44,470 --> 00:37:47,014
‎牠們之所以在黑暗的掩護下行動

335
00:37:47,098 --> 00:37:48,474
‎原因很明顯

336
00:37:54,021 --> 00:37:56,565
‎蟻后也在行動

337
00:37:58,859 --> 00:38:01,696
‎蟻后的體型比其它成員都大

338
00:38:01,779 --> 00:38:03,406
‎過去兩週

339
00:38:03,489 --> 00:38:06,075
‎牠幾乎每分鐘產下一顆卵

340
00:38:06,158 --> 00:38:08,369
‎因此也無法上路

341
00:38:15,251 --> 00:38:18,963
‎現在牠暫時停止了生殖工作

342
00:38:19,046 --> 00:38:22,174
‎可以搬到新的狩獵場

343
00:38:24,010 --> 00:38:28,556
‎這是牠唯一一次公開露面

344
00:38:30,808 --> 00:38:34,603
‎蟻后並非蟻軍唯一的重要旅者

345
00:38:37,064 --> 00:38:40,693
‎幾年一度的罕見情況下

346
00:38:41,402 --> 00:38:45,364
‎工蟻負責運輸超巨大幼卵

347
00:38:51,329 --> 00:38:54,874
‎牠們是雄蟻幼蟲和未來的蟻后

348
00:38:54,957 --> 00:38:59,170
‎日後將離開蟻群，自立門戶

349
00:39:10,931 --> 00:39:14,769
‎在日光再臨前，蟻軍在路上扎營

350
00:39:22,318 --> 00:39:27,156
‎牠們每天晚上都會繼續上路
‎直到抵達新的覓食地點

351
00:39:29,950 --> 00:39:33,621
‎到時，蟻后已準備好繼續產卵

352
00:39:33,704 --> 00:39:36,499
‎為自己的帝國添加工兵

353
00:39:39,543 --> 00:39:43,381
‎（四月）

354
00:39:43,464 --> 00:39:45,674
‎（北太平洋）

355
00:39:45,758 --> 00:39:47,134
‎回到北方

356
00:39:47,218 --> 00:39:49,428
‎灰鯨媽媽帶着牠的幼鯨

357
00:39:49,512 --> 00:39:52,681
‎展開大遷徙旅程已有四個星期

358
00:39:56,477 --> 00:40:00,523
‎從出發以來
‎小鯨魚已經增重超過一千公斤

359
00:40:01,440 --> 00:40:04,568
‎而媽媽已經數月沒有進食

360
00:40:07,696 --> 00:40:09,782
‎而牠還要遠涉重洋

361
00:40:09,865 --> 00:40:13,327
‎才能在白令海的開始大吃大喝

362
00:40:20,543 --> 00:40:25,381
‎兩母子緊貼海岸
‎利用視覺線索的引導

363
00:40:28,634 --> 00:40:32,221
‎過去30年裏
‎牠展開了很多次這樣的旅程

364
00:40:33,097 --> 00:40:36,142
‎從牠首次出發以來，發生了很多變化

365
00:40:40,146 --> 00:40:43,607
‎但牠依然不會迴避人類的注意

366
00:40:49,071 --> 00:40:53,033
‎而且，小鯨魚似乎很喜歡出風頭

367
00:41:00,332 --> 00:41:04,128
‎人山人海的加州海岸似乎

368
00:41:04,211 --> 00:41:06,297
‎與牠們在墨西哥的避風港截然不同

369
00:41:07,756 --> 00:41:11,051
‎而從這裏開始，一路上只會更加繁囂

370
00:41:17,349 --> 00:41:21,312
‎很快，兩母子到達了洛杉磯港

371
00:41:21,937 --> 00:41:23,856
‎它是北美最大的港口

372
00:41:33,449 --> 00:41:36,577
‎每年有近兩千艘船會使用此港

373
00:41:39,914 --> 00:41:44,627
‎持續不斷的引擎噪音
‎擾亂了水中的聲境

374
00:41:44,710 --> 00:41:49,256
‎擾亂了鯨魚的方向
‎增加了鯨魚撞船的風險

375
00:41:53,302 --> 00:41:58,265
‎每年，這些水域
‎都有幾十隻鯨魚被船隻撞死

376
00:42:02,937 --> 00:42:04,396
‎這隻灰鯨

377
00:42:04,480 --> 00:42:07,107
‎也不幸殞命

378
00:42:13,113 --> 00:42:17,993
‎媽媽和小鯨魚避開了最忙碌的航道

379
00:42:20,663 --> 00:42:24,458
‎但最危險的航程就在前方

380
00:42:26,877 --> 00:42:28,170
‎蒙特利灣

381
00:42:28,671 --> 00:42:31,298
‎35公里的開闊水域

382
00:42:39,598 --> 00:42:43,435
‎緊貼海岸會浪費寶貴的時間

383
00:42:45,896 --> 00:42:49,733
‎於是，媽媽把幼鯨
‎帶到了海灣的深水區域

384
00:42:51,318 --> 00:42:52,945
‎但這樣做有風險

385
00:42:56,657 --> 00:42:58,659
‎牠知道那裏有甚麼

386
00:43:04,290 --> 00:43:06,750
‎媽媽進入隱身模式

387
00:43:08,127 --> 00:43:10,629
‎停止常規呼叫

388
00:43:10,713 --> 00:43:13,674
‎儘可能減少浮出水面的次數

389
00:43:25,102 --> 00:43:25,936
‎虎鯨

390
00:43:28,606 --> 00:43:30,107
‎又稱殺手鯨

391
00:43:31,525 --> 00:43:33,235
‎牠們對這些水域瞭如指掌

392
00:43:34,153 --> 00:43:36,071
‎現在正在此狩獵

393
00:44:07,436 --> 00:44:10,397
‎灰鯨母子被發現了

394
00:44:14,068 --> 00:44:17,988
‎成年灰鯨的體重是虎鯨的十倍

395
00:44:18,072 --> 00:44:20,574
‎可以是厲害的對手

396
00:44:22,618 --> 00:44:26,497
‎所以，虎鯨群小心地兜圈，尋找機會

397
00:44:32,461 --> 00:44:33,837
‎牠們的目標不是媽媽

398
00:44:35,381 --> 00:44:37,132
‎而是幼鯨

399
00:44:58,654 --> 00:45:02,282
‎虎鯨猛撲到牠的背上，逼牠入水

400
00:45:02,366 --> 00:45:04,159
‎試圖淹死牠

401
00:45:17,589 --> 00:45:19,007
‎在母親的支援下

402
00:45:19,091 --> 00:45:21,677
‎牠躲過了第一輪攻擊

403
00:45:28,559 --> 00:45:30,394
‎但還是受傷了

404
00:45:34,565 --> 00:45:37,860
‎此時，虎鯨群叫來援兵

405
00:45:41,447 --> 00:45:44,074
‎一隻重達五噸的雄性

406
00:46:00,674 --> 00:46:02,718
‎有了外援加持

407
00:46:02,801 --> 00:46:05,471
‎虎鯨轉而全面攻擊

408
00:46:16,899 --> 00:46:18,859
‎母親也無能為力

409
00:46:21,528 --> 00:46:23,197
‎全速攻擊之時

410
00:46:24,364 --> 00:46:26,366
‎就像被一輛公車撞

411
00:46:37,669 --> 00:46:40,005
‎結局無可避免

412
00:46:52,768 --> 00:46:57,189
‎這位母親只能獨自繼續前行

413
00:47:08,200 --> 00:47:09,535
‎對許多動物而言

414
00:47:10,410 --> 00:47:13,455
‎遷移的本能大於一切

415
00:47:14,665 --> 00:47:16,500
‎儘管路上會有危險

416
00:47:18,752 --> 00:47:21,630
‎但每一次以悲劇告終的旅程

417
00:47:21,713 --> 00:47:24,591
‎都有無數同伴平安到達目的地

418
00:47:33,475 --> 00:47:36,770
‎使得牠們得以享受更好的生存條件

419
00:47:38,230 --> 00:47:39,982
‎以及全新的機會

420
00:47:42,901 --> 00:47:46,405
‎這些遷徙對其他動物也很重要

421
00:47:54,329 --> 00:47:57,583
‎然而，我們已經改變了這個星球

422
00:48:02,337 --> 00:48:04,464
‎阻斷祖先的遷徙路線‎…

423
00:48:07,885 --> 00:48:11,889
‎甚至殃及地球上最偏遠的角落

424
00:48:16,560 --> 00:48:17,978
‎但希望猶在

425
00:48:21,565 --> 00:48:24,776
‎我們比以往任何時候
‎都更加了解這些旅程

426
00:48:30,574 --> 00:48:31,783
‎有了人類幫助

427
00:48:31,867 --> 00:48:36,371
‎許多動物正在克服
‎現代世界所造成的挑戰

428
00:48:40,167 --> 00:48:45,672
‎為了一個健康而相連的星球
‎我們必須保護遷移的自由

429
00:48:50,218 --> 00:48:51,553
‎如果我們能做到

430
00:48:51,637 --> 00:48:54,890
‎所有動物的重要旅程

431
00:48:54,973 --> 00:48:57,601
‎都將得以長久延續

432
00:50:38,618 --> 00:50:41,496
‎字幕翻譯：Celine