我们星球上的生命（2023）

居住在地上的鸟类有了空间
ground-dwelling birds had the space
进化成了 自霸王龙以来最致命的捕食者
to evolve into the deadliest predator since Tyrannosaurus rex.
它们在棕榈林地中潜伏
Stalking among the glades of palms...
继承了 来自古老血脉的最具侵略性的特征
...it has inherited the most aggressive traits from its ancient bloodline.
空地上 一群早期哺乳动物在吃草
In the clearing, a herd of early mammals graze.
滑距貘
Theosodon,
大小与现代美洲驼相仿
about the size of a modern-day llama.
一只成年雌性在警惕地观察
An adult female keeps a keen watch.
但它没有看到…
But she hasn't seen...
骇鸟
the terror bird.
骇鸟的头像锄头 站立高达2.5米
With a head like a pickaxe and standing two and a half meters tall,
它放弃了飞行以换取纯粹的力量
it sacrificed flight for raw power.
它感觉到有些不对劲
She senses something is wrong.
但是骇鸟的行动悄无声息
But the terror bird moves in near silence.
捕猎开始
The hunt is on.
它能够很快加速到每小时50公里
Able to rapidly accelerate to 50 kilometers an hour...
它选择了一只落在后面的幼崽
he's picked out a youngster trailing behind.
它利用自己巨大头部的重量
Using the weight of his giant head,
非常善于变向
he's a master at changing direction.
最后一击的时间到了
Time to deliver the final blow.
野蛮的骇鸟统治着南美洲的平原
The savage terror birds now dominated the plains of South America.
但在世界的另一边
But on the other side of the world,
不断飘移的大♥陆♥
the ever-shifting continents
正在书写生命故事的新篇章
were writing a new chapter in the story of life.
（1500万年前）
澳大利亚已经向北漂移了数百万年
Australia had been heading north for millions of years.
在这个过程中 形成了一片广阔的浅海
As it did so, it created a vast shallow sea.
这是一个新的生命摇篮
A new cradle of life.
部分是植物
Part plant...
部分是动物
part animal...
这些是珊瑚
these are the corals.
它们利用太阳能
Using energy from the Sun,
形成地球史上最大的生物结构
they formed the largest living structure our planet has ever seen...
热带珊瑚礁
the tropical reefs.
1500万年前 这些巨大的海洋城市
Fifteen million years ago, these giant marine cities
为众多幸存者提供了机遇
offered opportunity to a wealth of survivors.
鲨鱼从深处游来
From the depths came the sharks.
珊瑚礁也吸引了 一些最后幸存的海洋爬行动物
The reefs also drew in some of the last remaining marine reptiles...
海龟
the turtles.
在这个水下天堂
Within this underwater paradise,
无数种新的鱼类也进化了
countless new kinds of fish also evolved.
不断增长的丰富资源 很快蔓延到更广阔的海洋
The growing abundance soon spilled out to the wider ocean...
令其充满生机
filling it with life.
这也没有逃过…
And this had not gone unnoticed...
一个坚韧不拔的物种的注意
by one relentless dynasty.
又是鸟类
Yet again, the birds.
更确切地说是海鸟
More specifically, seabirds.
数百万年前
Millions of years ago,
它们找到了一个神奇的方法
they found a spectacular way
来掠夺海洋的丰富资源
to plunder the ocean's bounty...
空袭
...with an aerial invasion.
如今依然如此
And it's still happening today.
其中最伟大的入侵者
The greatest invaders of them all...
是大鲣鸟
...are the gannets.
敏锐的视力 令其能在1.6公里外发现鱼群
Their keen vision means they can spot a ball of fish a mile away.
它们从空中俯冲
Diving from altitude,
以接近每小时90公里的速度刺入水面
they pierce the surface at close to 90 kilometers an hour.
专门进化了的颅骨
A specially adapted skull
和可收起的翅膀
and retractable wings
将其变成了活导弹
turn them into living missiles.
此外
What's more,
大鲣鸟可以屏住呼吸超过40秒
gannets can hold their breath for more than 40 seconds.
这些古老的海鸟是捕猎大♥师♥
These ancient seabirds are master hunters.
空袭令其能够 与海洋中最强大的捕食者竞争
Their aerial assault allows them to compete with the ocean's greatest predators,
鲨鱼
the sharks.
这样的疯狂进食 如今仍是大自然最宏伟的景象之一
Feeding frenzies like these are still some of nature's grandest spectacles,
与1500万年前别无二致
just as they were 15 million years ago.
恐龙从未征服海洋
Dinosaurs never conquered the oceans,
但它们的禽类后代终于找到了办法
but their avian descendants finally found a way.
它们对海洋的征服非常成功
Their conquest of the seas was so successful,
海鸟在全球各地建立了广大的群落
seabirds established vast colonies across the planet...
其中有一些如今成为 地球上最不可思议的生命聚集
now some of the most incredible gatherings of life on Earth.
但鸟类对海洋的征服并不彻底
But the birds' triumph over the oceans was not quite complete.
它们的巅峰成就
Their crowning achievement
可以在一个迷失在时间中的世界 得以最好的展现
can best be seen in a world lost in time.
加拉帕戈斯群岛
The Galápagos Islands.
这是海鬣蜥
These are marine iguanas,
小行星撞击之后 幸存的蜥蜴后代
descendants of lizards that survived the asteroid.
与多数爬行动物一样 它们必须晒太阳以保暖
Like most reptiles, they must bask in the sun to warm up.
但在这里晒太阳的不只有它们
But they're not the only sunbathers here.
还有一种非同一般的鸟
They're joined by an extraordinary bird.
企鹅
The penguin.
这是加拉帕戈斯企鹅
And this is the Galápagos penguin.
经过数千万年 它们的祖先改变了翅膀的用途
Over tens of millions of years, its ancestors repurposed their wings,
不再将其用于飞行
fine-tuning them to no longer fly in the air,
而是另有它用
but to pull off something remarkable...
在水下使用
beneath the waves.
水下飞行
Underwater flight.
企鹅拥有卓越的浮力控制能力
Penguins have sublime buoyancy control...
以及动物中最流线型的身体
and one of the most streamlined bodies of any animal,
这使它们成为 世界上最伟大的会游泳的鸟类
making them the world's greatest swimming birds.
寻找鱼类时 它们像蜂鸟一样
Scanning for fish, it hovers like a hummingbird...
完全悬停
with perfect poise.
相比之下 冷血的海鬣蜥动作迟缓
In contrast, the cold-blooded iguanas are slow and sluggish...
只能以低能量的海藻为食
restricted to feeding on low-energy kelp...
还要看洋流的脸色
at the whim of the currents.
温血的企鹅则完全不同
The warm-blooded penguins couldn't be more different...
凭借其速度和敏捷度
with their speed and agility...
能够轻松地追捕鱼类
chasing down fish with ease.
水下飞行
Underwater flight
使企鹅能够 以前所未有的方法利用海洋
allowed the penguins to exploit the seas like never before.
它们的策略非常成功
Their strategy has been so successful,
已经在南半球所有的大♥陆♥上建立群落
they've colonized all the continents of the Southern Hemisphere...
进化成 我们今天所知的18个不同的物种
...evolving into the 18 different species we know today.
对鸟类来说 这是最终的史诗篇章
The final epic chapter for the birds,
要知道 这个王朝曾濒临灭绝
a dynasty that was almost wiped out.
但由于恐龙族谱中的少数幸存者
But thanks to the few survivors of the dinosaur family tree,
鸟类从灰烬中重生
birds rose from the ashes.
在6600万年中
Over 66 million years,
它们以无数种形态重塑自我
they've reinvented themselves into a myriad of forms.
如今 鸟类有超过一万个物种
Today, 10,000 species strong,
几乎在地球上的每一个角落繁荣发展
they've found a way to thrive in almost every corner of the planet.
但征服世界的不只有它们
But they are not the only ones to have conquered the world.
在不久之前
Not so long ago,
美洲仍在骇鸟的蹂躏之下
the Americas were still at the mercy of the terror birds.
但这些顶级捕食者很快就会成为猎物
But these apex predators would soon become the prey.
小行星撞击的其它幸存者也在进化
Other survivors of the asteroid had also been evolving.
不再生活在恐龙的阴影之下
No longer in the shadow of the dinosaurs...
它们变得越来越大 越来越危险
...they'd grown bigger and more dangerous.
哺乳动物崛起的时候到了
It was time for the rise of the mammals.