巨型的动物 鲜活的传说 Giant animals, living legends.
神奇的生物 Fantastic creatures.
这些就是自然界中的大型动物 These are nature's big beasts.
但从它们的视角去体验这个世界 But experience the world from their perspective,
你会发现当大块头并非易事 and you'll see it's not easy being huge.
动物的体型越大 风险就越大 The larger the animal, the higher the stakes
其冒险旅程也就更具有史诗色彩 and the more epic the adventure.
父母会竭尽全力确保孩子的安全 Parents go to great lengths to keep their children safe.
但有一种海洋巨兽在这方面 比任何其他动物都要更甚一筹 But one ocean giant goes further than any other.
(旁白 汤姆希德斯顿)
和一辆巴士一样长 As long as a bus,
这头八岁的灰鲸 this eight-year-old gray whale
即将进行地球上所有哺乳动物中 最伟大的迁徙 is about to make the greatest migration of any mammal on the planet.
一个史诗般的任务 An epic undertaking...
尤其是它还带着一头两个月大的幼鲸 especially with a two-month-old calf in tow.
小家伙已经有约6米长 在着富含脂肪奶水的滋养下飞速成长 Already 20-feet long and growing fast on fat-rich milk.
然而 尽管这个温暖、隐蔽的墨西哥海湾 But while this warm, sheltered bay in Mexico
似乎是哺育幼崽的理想之地 seems an ideal place to raise a calf...
这里却没有什么妈妈能吃的东西 there's nothing here for Mum to eat...
它正慢慢地忍饥挨饿 and she's slowly starving.
它的觅食地远在八千公里外的地方 在遥远的北方 Her feeding grounds are 5,000 miles away. Far to the north.
这段艰苦的旅程会危及它孩子的生命 A grueling journey that will risk her baby's life.
但它们现在必须启程 不然妈妈就没力气活着抵达目的地了 But they must leave now, or Mum won't have the energy to make it.
灰鲸深呼进一口气 就足够100次填满人们的肺 With a deep breath that would fill our lungs a hundred times...
它带着自己的小巨兽从安全的育儿室出来 she leads her little leviathan from the safety of his nursery...
进入广袤无垠的蓝色海洋 into the big, blue beyond.
《灰鲸》
母鲸和幼鲸必须要游过 北美洲西海岸的距离 Mother and calf must travel the length of North America's west coast,
穿越太平洋 through the Pacific.
这片广阔的海洋 包含了地球上一半以上的水 This vast ocean contains over half of the water on Earth
和无数的海洋巨兽 and an enormous number of marine giants.
世界上最大的鱼 The world's biggest fish.
最致命的鲨鱼 The deadliest sharks.
还有传奇的海怪 And a legendary sea monster.
太平洋巨型章鱼可重达45公斤 Giant Pacific octopuses can weigh 100 pounds
能长到相当于三个人的身长 and reach the length of three men.
这只巨型章鱼的任务是要变得更大 And this one is on a mission to grow even larger.
这里有很多藏身之处 There are plenty of places to hide here...
但却躲不过像它一样聪明的捕食者 but not from a predator as smart as her.
章鱼有一个中央大脑 每只手臂上都有一个微型大脑 With one central brain and a mini-brain in every arm,
是世界上最聪明的无脊椎动物 octopuses are the most intelligent invertebrates in the world.
它不只是一个冷血杀手 And she's more than a cold-blooded killer.
现在四岁的它就要当妈妈了 Now four years old, she's about to become a mum.
它的体型越大 孩子存活下来的机会也就越大 The bigger she gets, the better the chances her babies will survive.
所以它在竭尽所能增加体重 So she's doing all she can to pile on the pounds.
它还是很饿 She's still hungry,
但现在是时候歇一下了 but it's time to take a breather.
即使有三个心脏供氧 Even with three hearts to oxygenate her body,
由于体型太大 很容易体力不支 she's so huge, it's easy to run out of steam.
但灰鲸必须继续前进 But the gray whales must press on.
利用海岸线来导航 它们以每小时4.8公里的速度行进 Using the coastline to navigate, they travel at three miles an hour.
幼鲸很难跟上妈妈 It's hard for the calf to keep up.
为了保持力量 它每天洗奶水浴来补充能量 To maintain his strength, he refuels on a bath full of milk a day.
但尽管它每周增重136公斤 妈妈却日渐消瘦 But while he gains 300 pounds a week, Mum is losing weight.
它的下一餐仍然远在千里之外 And her next meal is still thousands of miles away.
这次旅行让幼鲸第一次有机会 见到当地的海洋生物 This journey is her calf's first chance to meet the locals.
一群海豚游到它们掀起的波浪中嬉戏 A family of dolphins come to ride their bow wave.
它们2.4米长的身体 在妈妈庞大的身体前显得很矮小 Their eight-foot bodies dwarfed by his massive mum.
但与这里的一个巨兽相比 就连妈妈也显得渺小 But even she seems small compared to one giant out here.
这是这只幼鲸这辈子会听到的 最响亮的叫声 The loudest call the calf will ever hear.
它能在海中传播超过一千六百公里远 It carries over a thousand miles
是有史以来最大的动物发出的 and belongs to the largest animal ever to have lived.
一只蓝鲸 A blue whale.
它身长27米 是灰鲸妈妈身长的两倍 Ninety-feet long, it's twice the length of the gray whale mum.
有浓盐水支撑它们的体重 With dense saltwater to support their weight,
海洋动物的体型能比陆地上的动物大很多 ocean animals can become far larger than those on land.
蓝鲸通过吃指尖大小的生物 Blue whales supersize
而变得超大 by feeding on creatures no bigger than a fingertip.
只需一口 它们可以吞下 五十万卡路里的食物 In just one gulp, they can swallow half a million calories.
足够装满一辆卡车的磷虾 Enough krill to fill a truck.
幸运的是 这只温和的巨兽 对母鲸和幼鲸没有威胁 Thankfully, this gentle giant is no threat to the mother and calf.
游了1287公里后 它们抵达了加州 After 800 miles, they've made it to California.
这里是不同寻常生物的家园 Home to unusual creatures...
有着谨慎的居民 wary residents...
还有一种最非凡的巨型生物 and a most extraordinary colossus.
巨藻 Giant kelp.
世界上最大的藻类 The world's largest algae.
也是所有物种中生长最快的 And one of the fastest-growing organisms of all.
它巨大的叶子每天可以长60厘米 Its huge fronds can gain two feet every day...
长成一棵橡树那么高 and reach the height of an oak tree.
使它成为海洋中最高的生物 Making it the tallest living thing in the ocean.
充满空气的囊使巨藻保持直立 Air-filled sacs keep the kelp upright.
就像一个巨大的水下雨林 And like a vast underwater rain forest,
这些友好的巨型生物 为各种海洋生物提供食物和庇护所 these big friendly giants provide food and shelter for all sorts of sea life.
对于一个饥饿的准妈妈来说 这里有很多猎物 Plenty of prey for a hungry mum-to-be.
这只巨型章鱼又开始捕猎了 The enormous octopus is on the hunt again.
但这一次 它不是在寻找食物 But this time, she's not looking for food.
现在它已积蓄好了力量 需要找一个安全的地方产卵 Now she's built up her reserves, she needs somewhere safe to lay her eggs.
它最好快点找到 And she'd better find it fast.
对于海狮来说 即使是巨型章鱼 捕食起来也易如反掌 For a sea lion, even a giant octopus is a soft target.
一个巨大、无骨、充满蛋白质的身体 A big, boneless body full of protein.
改变形状和颜色 Changing shape and color...
转眼间 它就和背景融为一体 in the blink of an eye, she blends into the background.
但它已经被发现了 But she's already been spotted.
没关系 这位伪装女王 同时也是一个逃跑大师 No matter, this queen of camouflage is also an expert escape artist.
它可以在一团墨水中消失得无影无踪 She can disappear in a puff of ink.
它最后一个看似不可思议的戏法就是... And for her final, seemingly impossible trick...
它将自己巨大的身体 she squeezes her gargantuan body
挤进了一个和邮筒投信口一样窄的缝隙中 through a gap no wider than a mail slot.
它未来的育儿室很安全 Safe inside her future nursery,
它第一次也是最后一次关上了门 she closes the door for the first and last time.
一个巨兽的敌人却是另一个巨兽的朋友 One giant's enemy is another's friend.
好管闲事的海狮渴望了解这些巨大的访客 Nosy sea lions, keen to check out their enormous visitors,
加入鲸鱼的队伍玩起了水下追逐游戏 join the whales for a game of underwater tag.
突然 它们的玩伴消失了 Then suddenly their playmates vanish.
幼鲸不知道这些叫声意味着什么 The calf has no idea what these calls mean.
但妈妈太清楚了 But Mum knows only too well.
虎鲸 Orcas.
被称为杀人鲸是有原因的 Known as killer whales for a reason.
这些约五千四百公斤重的团体猎手 是海洋中最强大的掠食力量 These six-ton pack hunters are the most powerful predatory force in the ocean.
这个团体专门以灰鲸幼崽为食 And this pod specializes in gray whale calves.
它们十有八九会成功 Nine times out of ten, they succeed.
像巴士一样大 Being as big as a bus...
鲸鱼只有一个藏身之处 there's only one place the whales can hide.
但虎鲸并不仅仅靠视觉来定位猎物 But orcas don't only locate prey by sight...
它们也使用声音 they also use sound.
一头单独暴露在外的海狮 给了幼鲸一个幸运的逃生机会 A sea lion alone in the open gives the calf a lucky escape.
妈妈的藏身之处起作用了 Mum's hiding place worked.
通过反弹虎鲸发出的咔哒声 海带也帮忙救了幼鲸的命 By bouncing back the orcas' clicks, the kelp helped to save the calf's life.
这些水下森林为许多生物提供了避难所 These underwater forests provide sanctuary for many.
但妈妈还是没有吃的 But still, nothing for Mum to eat.
灰鲸只以北部丰饶水域中 隐藏在海床上的生物为食 Gray whales only feed on creatures hidden on the seabed in fertile northern waters.
当它的旅程继续时 While her journey continues...
在隐蔽的角落 away from prying eyes,
章鱼妈妈也饿了 the octopus mum is also going hungry.
它已经四周没进食了 For four weeks, she hasn't eaten a thing.
它一直很忙碌 产下十万颗卵 She's been busy laying a hundred thousand eggs.
每一颗卵都可能孵化出一头海怪 Each a sea monster in the making.
成为母亲让它疲惫不堪 Becoming a mum has worn her down,
但真正的工作才刚刚开始 but the real work has only just begun.
它必须经常在富含氧气的水中 给子女们洗澡 She must constantly bathe her offspring in oxygen-rich water.
让它们保持清洁 Keep them clean.
并保护它们不受盗贼的侵害 And guard them from thieves.
它的孩子们还要七个月才能孵化出来 Her brood won't hatch for another seven months,
这段时间中它都要值班 and all that time she'll be on duty.
无法离开 无法进食 Unable to leave. Unable to eat.
体型是它现在唯一的超能力 Size is now her only superpower.
它巨大的身体是孩子们的堡垒 Her huge body is her babies' fortress.
幸运的话 它会有足够的精力 来确保它们存活 And with luck, it'll give her the stamina to ensure they survive.
养育巨婴意味着要昼夜不停地工作 Raising enormous babies means working around the clock.
日以继夜 这位全心全意的妈妈 敦促着幼鲸往北方游 Night and day, this devoted mum urges her calf north.
它们行进得越远 天气就越冷 旅程就越辛苦 The further they go, the colder and rougher it gets.
紧靠浅滩前进 Hugging the shallow coast,
远离开阔海洋中的危险 keeping away from danger in the open ocean...
它们离前方富饶的海域越来越近 they move closer to the richer seas ahead.
一个多月来 它们每天都要行进112公里 They've been traveling 70 miles a day for over a month.
当孩子随时享用全脂奶水时 While her calf has full-fat milk on tap,
妈妈正饥肠辘辘地往前游 Mum's now swimming on empty.
对于迁徙的灰鲸来说 饥饿是一个巨大风险 Starvation is such a risk for migrating gray whales.
有些灰鲸从未完成这段旅程 Some never complete the journey.
但再过一周 它就能得救了 But salvation is just a week away.
前方800公里处 离加拿大海岸不远 500 miles ahead, off the coast of Canada,
数百万鲱鱼聚集在一起产卵 millions of herring are gathering to breed.
史诗般的奇观吸引了来自四面八方的目光 An epic spectacle that attracts attention from far and wide.
虽然很多鱼被捕捞 但大量的鱼存活了下来 Although many fish are taken, vast numbers survive.
足以让这片海洋变色 Enough to make this stretch of ocean change color.
受精卵把海底变成了一个 Fertilized eggs transform the seabed
神奇的冬季仙境 into a magical winter wonderland.
为前来这里的饥饿巨兽准备了充足的食物 Full of food for hungry giants coming this way.
对章鱼妈妈来说 前方没有这样的生命线 For the mother octopus, there's no such lifeline ahead.
它还在照顾自己的孩子们 She's still tending her brood.
但几个月没有进食 已经对它造成了永久性伤害 But months without eating have taken their toll.
它的精力所剩无几 但工作差不多要完成了 Barely any energy left, but her job almost done.
喷出最后一束水 它帮助孩子们上路 With one last jet of water, she helps her babies on their way.
它再也见不到它们了 She will never see them again.
这位母亲牺牲了自己 为十万个孩子提供了生命 Giving life to a hundred thousand babies has cost this mother her own.
它的故事虽然结束了 Her story may be over,
但许多新的生命才刚刚开始 but many new ones are just beginning.
存活下来的婴儿会长成现在的一千倍大 The babies that survive will grow a thousand times bigger,
变成海洋中的传奇 就像它们的妈妈一样 into legends of the deep, just like Mum.
鲸鱼妈妈的旅程也即将结束 The journey is almost over for the whale mum too.
经过成千上万公里的艰苦跋涉 After thousands of grueling miles,
最终 它抵达了目的地 finally, she's reached her goal.
海里满是鲱鱼卵 The sea is brimming with herring eggs.
够所有生物吃 Enough for everyone.
终于 这位坚韧的母亲可以进食了 At last, this resilient mother can feed.
它在海底翻滚 吸进了数百万的卵和无脊椎动物 Rolling on the sea floor, she sucks up millions of eggs and invertebrates,
通过它下巴上梳状的板过滤 filtering them out through comb-like plates in her jaw.
六个月来 它第一次大吃特吃 直到吃饱为止 For the first time in six months, she feasts until she's full.
母性是灰鲸终极的耐力壮举 Motherhood is the ultimate feat of endurance for a gray whale.
但这段旅程最艰难的部分已经过去了 But the hardest part of the journey is now behind her.
此后 母鲸和幼鲸可以继续向北航行 From here on, mum and calf can cruise further north
和其他鲸鱼一起 in the company of other whales.
它们将在整个夏季不断进食 They'll feed up through the summer,
为几个月后史诗般的回归之旅做准备 preparing for the epic return journey in a few months' time.
字幕翻译:谭萱