这群帝企鹅即将忍受严寒 These emperor penguins are about to undertake
成就一项这个星球上最伟大的壮举之一 One of the greatest feats of endurance on the planet.
这是一枚帝企鹅蛋 A single egg.
帝企鹅妈妈耗尽了全部精力 才将它安全产下 It's taken almost all this mother's energy to create.
现在它要把企鹅蛋托付给帝企鹅爸爸 Time to entrust it to her mate.
然后前往大海觅食 While she leaves to feed at sea.
现在 这枚企鹅蛋要依靠帝企鹅爸爸了 Now it's up to dad.
它要保护自己的宝贝度过世界上最为严酷的冬天 He must carry the egg through the world's worst winter.
即使牺牲自己 也要确保蛋壳里的帝企鹅宝宝活下去 Risk his own life to keep the chick growing inside alive.
和生生不息的帝企鹅家族一样 Just one of the many remarkable stories of how
还有很多精彩的生命故事正在地球的两极地区上演 Life triumphs at the ends of the earth.
水深火热的星球
极地地区进入冬季时 When winter hits the polar regions,
气温最低可降至 The temperature can drop as low as
零下80摄氏度 Minus 120 degrees fahrenheit.
这里几乎寸草不生 Almost nothing grows.
全球最为猛烈的寒风呼啸着 Winds build into some of the strongest on earth.
海洋和陆地冰封雪冻 You've got land and sea locked in ice.
持续数月的极夜现象 And weeks of perpetual darkness.
只有少数动物具备在极地地区生存的非凡本领 Only a few remarkable animals have what it takes
它们每天既要与天气抗衡 To survive here, and every day is a struggle
又要与同类竞争 Against the elements and each other.
现在 极地是受地球气候变化 Now the poles are changing faster than
影响最大的地区 Anywhere else on the planet.
在严寒中艰难度日 And getting through the coldest days,
仅仅是这场生存之战的开始 That's just the beginning of the battle.
深秋时节 Late fall.
北极熊正摩拳擦掌 Polar bears are grounded.
等到海面完全结冰 Once the sea has frozen over
它们就可以踏上冰面展开狩猎 They can head out and begin hunting.
但自从20世纪70年代以来 它们等待的时间越来越长 But since the 1970s that's taking longer.
它们不得不继续忍耐三周 Hunger claws for an extra three weeks.
而这只年轻的雄性北极熊面临着其它威胁 And this young male must face other challenges.
一只年长的竞争对手出现了 An older rival.
北极熊是陆地上体形最大的猎食动物 The largest of all land predators.
雄性生性好斗 Male polar bears lead a life of violence.
然而今天 双方均手下留情 But today punches are being pulled.
这样的练习可以检验它们的力量和技巧 Sparring partners test strength and skill.
帮助它们为艰巨时刻做足准备 Preparing for tougher times.
到那时 它们将为了食物和配偶展开生死较量 When the battle for food and mates will be real.
现在 它必须保持耐心 But first, patience.
等待冬天的到来 Wait for winter.
极地迎来了一个神奇的数字 The magic number.
当气温降至零下1.8摄氏度 28.8 fahrenheit.
海水开始冻结 Sea water begins to freeze.
一个冰雪王国形成了 An ice kingdom is born.
狩猎场无边无际 Almost limitless hunting grounds.
可就在北极熊茁壮成长时 最艰难的季节悄然而至 The harshest season is when polar bears thrive.
北极地区陷入长达24小时的黑夜中 The arctic plunges into 24 hours of night.
在极点周围 地球的磁场产生了一种 Around the poles the planet's magnetic field puts on an
神秘的光芒 Unearthly display.
在北极地区出现的被称为北极光 In the north the aurora borealis.
而在南极地区出现的被称为南极光 And in the south the aurora australis.
虽然冬日的夜空美妙绝伦 Winter here looks heavenly.
但这群帝企鹅正备受煎熬 But for these emperor penguins it's hell on earth.
它们全部都是雄性 All of them are male.
为保护企鹅蛋安然无恙 And if the eggs they're carrying are to survive,
它们必须咬紧牙关 All of them must stand strong.
每只帝企鹅轮流交换在群体中的位置 抵御凛冽的寒风 Each one takes their turn in the full force of the wind.
它们小心翼翼地保持着平衡 All the time balancing their eggs on their toes.
防止企鹅蛋落到寒冷的冰面上 Just beyond the ices deadly reach.
帝企鹅爸爸长达75天的无私守护终于结束了 75 days of sacrifice finally over.
一切都是值得的 It was worth it.
这只帝企鹅宝宝只有170克 它必须赶快长大 Just 6 ounces, he's got a lot of growing to do.
再有不久 它们脚下的冰面将不复存在 Soon the ice on which they stand will all be gone.
这里是加拿大最靠近北极冰层的一片荒野 This is Canada's last land before the arctic pack ice.
一个由8只北极狼组成的狼群 Somehow an eight-strong pack of arctic wolves
在这里生活 Survives here.
在残酷的冬日 During the brutal winter
寻找食物是每天必须面对的难题 Finding food is a daily struggle.
在煎熬了近3个月的黑暗日子后 它们终于看到了一线光芒 But after almost three months of darkness a ray of hope.
很少有动物可以在这里生存 Arctic hares are one of the few other creatures
而北极兔是个例外 That survive here.
它们成群结队地聚在一起 警戒安全 Gathering in huge groups offers protection.
现在阳光已经洒遍大地 And now the sun has returned,
狼群很难发动突袭 The element of surprise is gone.
北极狼的付出一无所获 A lot of effort for no return.
这里还有体形更大的动物 There are bigger opportunities here,
但北极狼同样要面临更严峻的风险 But they come with greater risks.
麝牛 Musk oxen.
北极地区真正的生存高手 One of the arctic's true survivors.
为了填饱肚子 北极狼群 In their search for food the arctic wolf pack
一天可以奔跑80公里 Can cover 50 miles in a day.
这群麝牛整个冬天都生活在 These musk oxen have spent all winter
这片冰天雪地中 In this frozen waste land.
完美适应了这里的环境 They're built to survive.
一只成年麝牛就足以喂饱整个北极狼群 But just one adult would feed the entire pack.
冬季 北极狼围捕麝牛的场景十分罕见 To witness wolves hunt musk oxen in winter is so rare
人们从未有过拍摄记录 今天则得以一见 It's never been captured on camera, until now.
这群麝牛中有一头小牛犊 This herd has a youngster.
成年麝牛为它建起了保护屏障 But it's protected behind a united front.
成年麝牛拥有锋利的牛角 Armed with slashing horns,
重达300多公斤 Adults weight up to 700 pounds.
北极狼群寻找着对方防御的薄弱之处 The wolves search for weakness in their defense.
它们想让麝牛奔跑起来 Try to get them on the run.
小麝牛的妈妈不愿离开 The mother won't leave her calf,
它的母性反而让它送了命 But her instincts work against her.
在残酷的极地世界中 一种动物能活下来 In such a brutal landscape, one animal's survival often
往往意味着另一种动物生命的终结 Depends on another's fate.
在南极 日照正逐渐增强 In the south, the sun's power is increasing.
帝企鹅宝宝破壳而出已有12周了 It's been 12 weeks since he hatched.
再有不到4个月 这里的冰雪都将融化 In fewer than four months, all this will have melted.
到那时 帝企鹅宝宝必须学会游泳 By then chicks must be ready to swim.
帝企鹅宝宝的成长速度生死攸关 His life depends on how quickly he grows.
它的体重必须在150天内增长70倍 In just 150 days his body weight must increase 70 times.
越来越强烈的阳光似乎预示着它们光明的未来 Strengthening sun promises easier times.
但在极地世界中 一切仍旧变化莫测 But down here promises are easily broken.
南极洲的寒风变得越来越猛烈 Antarctica's freezing winds have become more ferocious.
地球臭氧层出现的空洞扰乱了大气 A hole in the planet's ozone layer is disrupting
天气也变得无常 The atmosphere, altering the weather.
尽管帝企鹅爸爸还没捕鱼归来 Even though dad hasn't returned from fishing,
可如今帝企鹅宝宝的胃口大增 The chick now needs so much food,
妈妈也不得不前去觅食 Mum must go too.
帝企鹅宝宝本能地跟随着妈妈 His instincts are to follow.
这是一个错误 But it's a mistake.
帝企鹅宝宝远离了安全之所 He's walking away from safety.
它必须再回到企鹅群中 Unless he makes it back to the colony,
否则就是死路一条 He will die.
在南极洲 暴风雪袭击了 In Antarctica a storm has hit the
帝企鹅群 Emperor penguin colony.
它们付出了沉重的代价 It's taken a heavy toll.
不过大多数帝企鹅宝宝互相帮助 幸免于难 But most have survived, keeping each other alive.
孤零零的帝企鹅宝宝们必须找到各自的父母 Separated chicks must now find their parents.
面前17000只帝企鹅中 Somewhere amongst 17,000 penguins,
有一只是自己的爸爸 Is his father.
帝企鹅宝宝有着独一无二的叫声 His call is unique.
父子安全地团聚了 Reunited and safe.
这些帝企鹅宝宝学到了宝贵的一课 These chicks have learned an important life lesson.
只有团结一致 它们的种群才能生生不息 The colony only survives by standing together.
北极迎来了春天 Spring races across the arctic.
季节的变化为动物们带来了新的挑战 The change brings new challenges.
这是一头年轻的雌性北极熊 A young female.
它平日以海豹为食 She depends on seals for food.
只有海豹能为它提供足够的能量 The only prey with enough calories to sustain her.
随着冰雪消融 海豹可以轻松找到逃生路线 As the ice melts, escape routes are now everywhere.
这只北极熊成功的可能性微乎其微 Her chances plummet.
北极熊的嗅觉格外敏锐 Bears have an acute sense of smell.
它可以发现3公里外的海豹 They can detect seals from nearly 2 miles.
这只海豹离它更近 This one's closer.
血腥味随风飘散 News of her kill carries on the wind.
引来了一只健硕的雄性北极熊 它也盼望着饱餐一顿 A huge male, he needs food too,
为此可以不择手段 And he doesn't care how he gets it.
然而留给它的只有骨头 Just bones.
雌性北极熊已经吃饱了 She's taken her fill.
必须尽快离开 Now she must leave.
饥不择食的雄性北极熊可能会同类相残 A hungry male polar bear can turn cannibal.
夏日的到来往往会让两极地区产生翻天覆地的变化 Summer in the poles has always been a time of transformation.
然而目前北极环境的变化速度 But now the arctic is changing faster than
创下了历史新高 At any rate in recorded history.
气候逐渐变暖 The climate is warming.
北极熊必须立即做出一个生死攸关的决定 Polar bears face immediate survival choices.
在海水中继续潜游 或是游向陆地 Head deeper in to the ice or swim for land.
无论选择是什么 之后的4个月中它都要忍饥挨饿 Either way four lean months lie ahead.
极地的气候变化对一些动物提出了挑战 Climate change at the poles will bring challenges for
但对另外一些动物而言 这反而是一次机遇 Many, but for some it's opportunity.
50多年来 这里的平均气温上升了 Over 50 years the average temperature here has risen
大约3摄氏度 By around 5 degrees fahrenheit.
和生活在冰天雪地中的帝企鹅不同 Gentoo penguins like it warmer than their
巴布亚企鹅喜欢较为温暖的环境 Ice loving emperor cousins.
冰雪消融后裸露的岩石是筑巢的理想场所 It exposes the bare rock they need for nesting.
这片水域非常富饶 多数时候都可以一次养育 The waters here are so rich successfully raising
两只巴布亚企鹅宝宝 Two chicks is far more likely.
跑在最前面的可以优先得到食物 Who'll feed first is decided by a chase.
这里有各个年龄段的巴布亚企鹅宝宝 Chicks are at all stages.
年龄最大的一批准备下海试试身手 The oldest are ready for the sea.
然而很多首次下水的企鹅宝宝很可能因此丢了性命 But their first taste of the ocean may also be their last.
南极洲附近气候的变化有助于 A changing climate around antarctica is helping
巴布亚企鹅的种群壮大 Gentoo penguin populations.
但即使在夏天 天气状况也可能急转直下 But even in summer conditions can deteriorate rapidly.
风暴将支离破碎的海冰卷至岸边 Storms blow brash ice into shore.
巴布亚企鹅宝宝回到聚居地的路线 障碍重重 The route back to the colony is blocked.
在迷宫般的浮冰间穿行 Fledglings must negotiate a maze of floating ice.
一不留神就会落在后面 It's all too easy to get left behind.
浮冰不是这里唯一的危险 And that's not the only danger.
在浮冰中前进是一项体力活 Pushing through brash ice is hard work.
并且这里不宜久留 But this is not a safe place to rest.
恐慌驱使着它们快速向前 Panic drives them on.
这是豹形海豹 A leopard seal.
它身长超过3米 专门以企鹅为食 A 12 foot long penguin predator.
它的注意力转向了掉队者 Attention turns to the straggler.
巴布亚企鹅越是挣扎 就越容易被发现 The more he struggles, the easier he is to find.
豹形海豹喜欢玩弄自己的猎物 Leopard seals like to toy with their victims.
毕竟这里的猎物多得是 它无需着急 With so much prey about, there's no rush.
这只巴布亚企鹅没有退缩 A last act of defiance.
最终侥幸逃脱 The one that got away.
当然 还有很多企鹅要闯过这一关 Still, there's plenty of other penguins to play with.
盛夏时节到来 Summer intensifies.
冰雪进一步消融 Ice continues to retreat.
北极熊被困在岸边 Polar bears are stranded.
它们迎来了一年中最艰难的时刻 Their toughest time.
它们的生存几乎只能依靠去年冬天积累的脂肪 Surviving on fat built up last winter.
如今它们已经骨瘦如柴 Reserves are running low.
周围几乎没有食物 There's almost nothing to eat.
但也有例外 Almost.
每年的这个时候 白鲸都会游至 At this time of year beluga whales arrive
加拿大的浅水区域 In Canada's shallows.
这里为刚刚出生的白鲸提供了庇护所 A sanctuary for newborns.
水温相比远洋要高10摄氏度 These waters can be 18 degrees warmer than the open sea.
白鲸成了北极熊的救命稻草 This could be his life line.
一顿大餐近在眼前 They're tantalizingly close.
白鲸与其它鲸类不同 它们的颈部十分灵活 One of the few whales with flexible necks.
能轻而易举地发现北极熊 The belugas easily see him coming.
北极熊每次潜水 都会浪费宝贵的体力 With each dive, he wastes precious energy,
它安全度过这个夏天的几率变得越来越小 And his chances of surviving summer get slimmer.
在哈得孙湾的海滨 一头饥饿的北极熊 On the shores of Hudson bay a hungry polar bear is
拼命想要捕到白鲸 Desperately trying to hunt beluga whales.
在宽阔水面上捕食几乎是不可能的 Catching them in open water has proved almost impossible.
但北极熊不愿错失良机 But he can't let this opportunity slip away.
它需要改变策略 A change in tactic.
站在礁石上 北极熊更容易发现猎物 From the rock prey is easier to spot.
只要白鲸游进捕猎范围 If only they would come in range.
它的身体构造适合在寒冷环境中生存 如今却要忍受阳光的折磨 Built for the cold, suffering in the sun.
终于 Finally.
它捕到了一头白鲸幼崽 A calf.
虽然肉质不像成年白鲸那样肥 Not fat like an adult but perhaps just enough
但至少能让这头北极熊免于饿死 To keep starvation at bay.
能否捕到白鲸 决定了这群北极熊的 Hunting beluga whales might make the difference between
生死 Life and death for these bears.
但如果海面迟迟不结冰 But if the ice-free season gets longer.
它们则无法一直坚持 Even this may not be enough.
极地动物经历过不断进化 能够在冰天雪地 Polar animals have evolved to survive the coldest,
荒无人烟的环境里生存 Harshest conditions on earth.
但现在极地成为了地球上气候变暖 But now the polar regions are warming more rapidly
速度最快的地区 Than anywhere else.
一些动物迎来了全新的生存机会 This means new opportunities for some,
但对那些早已适应在严寒中生活的动物来说 But for the most cold adapted,
它们能否以全新的方式 There are seriously challenging days ahead.
适应这个快速变化的世界 The question is, can they find new ways to adapt
我们不得而知 To a fast changing world.
帝企鹅父母踏上了到家前的最后一段旅程 The emperor penguin parents are on the home stretch.
它们水陆兼程 千里跋涉 Together they have traveled thousands of miles
只为给自己的后代提供食物 Keeping their chicks fed.
帝企鹅宝宝出生时体重不到400克 He hatched out at under a pound,
而现在它的体重超过了9公斤 几乎和父母差不多大了 Now he's over 20, almost as big as his parents.
帝企鹅宝宝很快就不需要父母喂食了 Soon they'll stop returning with food,
它们将学会自己捕猎 Chicks will be catching their own.
帝企鹅父母竭尽所能 This family have done everything they can,
希望它们的后代有朝一日也会回到这里 In the hope that their chick will one day return.
让它们的传奇故事继续在极地 And the incredible story of life at the poles
上演 Will continue.
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