我们的星球（2019）

‎对一种动物而言 ‎此时正是旅行的时机
For one animal, this is the moment to travel.
‎午夜 在不列颠哥伦比亚 ‎离岸处的一座偏远岛屿
Midnight on a remote island off British Columbia.
‎地面之下…
Underground...
‎有东西在骚动
something stirs.
‎这只幼年的扁嘴海雀 ‎不久前刚刚破壳而出
This ancient murrelet chick has only just hatched
‎但它即将经历一段无比艰辛的旅程
yet it's about to face the toughest journey it will ever make.
‎她还没有吃到第一餐
She hasn't had her first meal
‎此时正急需食物
and urgently needs food.
‎海雀妈妈发出联络呼叫
Mum makes contact.
‎岛上饥肠辘辘的雏鸟从洞穴钻出
Across the island, hungry chicks emerge from their burrows
‎循着父母的叫声而去
following their parents' calls.
‎可如果它们以为立马就有东西吃
But if they're expecting to eat now
‎那可要失望了
they're going to be disappointed.
‎扁嘴海雀是唯一一种
This is the only seabird
‎完全在海上进行哺喂的海鸟
that is fed exclusively at sea.
‎雏鸟只需到达海上
The chicks just need to get there.
‎它们尚未学会飞行
They can't yet fly
‎所以到达大海的唯一办法
so their only way to the ocean
‎就是走路
is on foot.
‎尽管为了躲避天敌 ‎选择趁夜赶路是明智之举
While waiting till nightfall makes sense to avoid predators
‎但夜间也更难辨清去路
it's a little harder to see where you're going.
‎况且 如果你的身型 ‎只比高尔夫球大一点点
And when you're barely bigger than a golf ball
‎任何东西都可能成为阻碍
anything can be an obstacle.
‎哪怕是再低矮的原木…
Their way may be blocked by the lowest of logs...
‎再小的溪流 都可能挡住它们去路
and the smallest of streams.
‎一些雏鸟的征程尚未开始便已告终
For some, the journey is over before it has even begun.
‎而这只并不然
But not for this chick.
‎终于到达海滩
Finally, the beach.
‎这是它最后一次脚踏陆地 ‎下一次就要等两年后了
And it's the last land it will touch for two years.
‎为了寻找母亲
To find Mother
‎雏鸟在黑暗中发声呼叫
it calls into the darkness.
‎再次团聚
Together again.
‎但小家伙还饥肠辘辘
But the chick has still not eaten.
‎为了到达距离最近的食源 ‎它们片刻不停地划水
To reach the nearest food, they paddle nonstop
‎居然坚持了70公里
for a remarkable 70 kilometers.
‎到了这里 母亲终于可以潜入水下
Here, Mother can finally dive
‎为雏鸟衔来第一顿磷虾美餐
to collect the chick's first meal of krill.
‎但这只是短暂休息
But this is just a pit stop.
‎它们还要继续划水上千公里
The pair paddle a further thousand kilometers.
‎此次迁徙耗时一个月 ‎目标是到达富饶的北方海域
It's a month-long migration to the rich northern seas
‎在那里 它们可以尽享美食
where they can feast.
‎这大概是初生雏鸟 ‎所经历过最为漫长的旅程
It's probably the longest journey made by any newly hatched bird.
‎因为夏日的海洋十分丰产
And because the oceans are so productive in summer
‎扁嘴海雀的整个生命历程 ‎几乎都是在海上度过
the murrelets can spend virtually their entire lives at sea.
‎（五月）
‎夏威夷西北1600公里处
1600 kilometers northwest of Hawaii
‎有一片偏僻之地
lies a remote speck of land
‎莱桑岛
Laysan.
‎这里生活着全世界最大的海鸟之一
Home to one of the world's largest seabirds.
‎莱桑信天翁
The Laysan albatross.
‎这只雏鸟才六周大
This chick, six weeks old
‎日后将成为一位杰出的长途旅者
will become a supreme long-distance traveler...
‎60年的生命时光中 ‎它将飞行数百万公里
...flying millions of kilometers in its 60-year life.
‎不过现在 四个月大的它
Now, however, at four months old
‎还不会飞行
it's still flightless
‎哪里也去不了
and going nowhere.
‎与海雀不同
Unlike the murrelet
‎信天翁只能靠父母哺喂
it depends on food being brought to it
‎饭来张口
by its parents.
‎但它们很可能在三千公里外捕鱼
But they could be fishing up to 3,000 kilometers away.
‎所以它可能要等上好一阵子
So it may be waiting a while.
‎淋着瓢泼大雨…
Through pouring rain...
‎迎着呼啸狂风…
...blasting winds...
‎顶着炎炎烈日
and baking heat.
‎每只飞过天边的鸟儿都会带来希望
Every bird crossing the horizon brings hope.
‎一只信天翁
An albatross.
‎然而它并非同类
But the wrong kind.
‎黑脚信天翁
A black-footed.
‎不过 她十有八♥九♥也带回了食物
Though she has almost certainly brought food.
‎饥肠辘辘的莱桑雏鸟想试试运气
Starving, the Laysan chick tries its luck.
‎显然 对这位母亲而言 自家优先
Clearly, for this mother, it's family first.
‎不过 有些东西貌似救命
But what looks like a lifeline...
‎实则夺命
...could be a death sentence.
‎放眼岛上 雏鸟正在死去
Across the island, chicks are dying.
‎海洋中大量的塑料
There is now so much plastic in our oceans
‎甚至被冲刷到地球上最为偏远的岛屿
that it reaches even the most remote islands on Earth.
‎海流将垃圾带到了此处
Carried here by the currents.
‎海鸟误将塑料漂浮物 ‎当作食物带回给雏鸟
The parents mistake small floating pieces for food and bring it to their young
‎却一不小心要了它们的命
accidentally killing them.
‎几乎可以肯定 ‎岛上的所有雏鸟胃里都有塑料
It's almost certain that every chick on the island has plastic in its stomach.
‎那些吃进太多塑料的会被活活饿死
Those that are fed too much starve to death.
‎莱桑信天翁面临着巨大的危险
Laysan albatross are in the greatest danger.
‎它们往往比其他海鸟吃下更多塑料
They consume more plastic than any other seabird.
‎而且情况每年都在恶化
And it's getting worse each year.
‎终于 在海上奔波近三周后…
At last, after nearly three weeks at sea...
‎这只雏鸟的父亲回来了
the chick's father returns.
‎经历了长久的分离
Having spent so long apart
‎它们需要重新建立感情
they need to renew their bond.
‎这可能是这只雏鸟 ‎从父母那里获得的最后一餐
This could be the last meal the chick is ever given.
‎而其中几乎肯定含有塑料
And almost certainly contains plastic.
‎父亲回归太平洋 ‎继续纵横驰骋的生活
Its father returns to a life traveling the Pacific.
‎留下雏鸟听天由命
And the chick is left to its fate.
‎不过 对他而言 一切还没有结束
But it's not over for him yet.
‎信天翁通常会吐出难以消化的部分
Albatrosses normally throw up hard-to-digest parts
‎例如鱿鱼嘴和骨头
like squid beaks and bones.
‎不过吐出打火机和瓶盖就费劲多了
Ejecting lighters and bottle caps, however, is more of a challenge.
‎而这只雏鸟
But this chick...
‎挺过了难关
is a survivor.
‎如此一来
And with that
‎他距离起飞又近了一步
he is one step closer to takeoff.
‎再过几周 待到顺风之时
In a few weeks, on the right wind
‎他将终能得以首次展露身手
he will finally be able to make his big debut
‎跻身最伟大的海洋旅行者之列
as one of the greatest ocean travelers.
‎我们倾斜的星球 ‎在太空中的运行轨迹
The course of our tilted planet through space
‎对一个地方的影响远胜于别处
affects one place more than any other.
‎（六月）
‎北半球处于夏季
Summer in the North.
‎北极正受到太阳的照射
The Arctic now faces the sun
‎昼夜沐浴在日光中
and is bathed in round-the-clock daylight
‎照射融化覆盖着冰雪的海洋
melting an ocean covered in ice.
‎为了在不断变化的世界中求生
To survive in this shifting world
‎各种生命也必须以动应变
life must move with it.
‎这只北极熊幼崽的家 ‎每年都会发生巨大的变化
This young polar bear's home changes so much each year
‎他无法留守在有限的领地之内
that he can't keep to a limited territory.
‎而是必须漫游数千公里
Instead, he must roam for thousands of kilometers
‎寻找海豹
in search of seals.
‎然而 每年夏天 随着冰雪融化
But every summer, as the ice begins to melt
‎他只能花更多时间游泳…
he must spend less time walking...
‎而非行走
and more time swimming.
‎如今 他每天要游近八个小时
Now, for almost eight hours a day.
‎他能闻到30公里外的猎物
He can smell prey from 30 kilometers away.
‎所以他知道 这只髯海豹就在附近
So he knows that this bearded seal is nearby.
‎海豹并没有意识到有危险
The seal is unaware of the danger.
‎而北极熊正需要它继续蒙在鼓里
And the bear needs to keep it that way.
‎水中猎食的成功率很低
The success rate of hunting from the water is very low.
‎或许第三次会走运
Maybe third time will be lucky.
‎这只小北极熊 ‎尚未掌握海上追踪的诀窍
This young bear has yet to master the art of stalking from the sea.
‎但掌握此项本领非常重要
But it's important that he does.
‎一年年过去 它可能会越来越依赖它
He may have to rely on it more and more each year.
‎地球气候正在变暖
Our climate is warming.
‎而受此效应影响最大的
And nowhere is this having a greater effect