Only the southern elephant seal is bigger.

只有南象海豹的体型更大。

Well, she built an elephant seal version of that.

她做了一个象海豹版的程序。

We never know why the elephant seal crossed the road.

我们从来不知道象海豹为什么要过马路。

For centuries, northern elephant seals were hunted for their blubber.

几个世纪以来，北方象海豹因其鲸脂而被捕杀。

The northern elephant seal is the world's second-largest seal.

北象海豹是世界第二大海豹。

But some mammals, like the northern elephant seal, survive with much less sleep.

但有些哺乳动物，如北象海豹，睡眠时间要少得多。

And scientists have often observed elephant seal mothers feeding the pups of other females.

科学家们经常观察到海象妈妈喂养其他雌性海象的幼崽。

" Initially we wanted to know how elephant seals find their prey in the dark."

“最初我们想知道南象海豹如何在黑暗中找到猎物。”

How elephant seals short-circuit that, we don't have a clue.

海象是如何这样短暂休息生活的，我们一无所知。

You're like one of those elephant seal pups that steals the milk from two mothers!

你就像象海豹的幼崽，从两个妈妈那里抢奶喝！

So try to explain this: Male elephant seals are pretty unlucky in love.

雄性海象在求爱上十分不幸。

It's in these dark depths that southern elephant seals love to feast on squids and fish.

正是在这些黑暗的深处，南象海豹开心地享用乌贼和鱼。

Male northern elephant seals may reach four meters long and weigh up to 2,000 kilograms.

雄性北象海豹身长可达4米，体重可达2000公斤。

To track elephant seal sleep, Costa's graduate student Jessica Kendall-Bar built a deep sea-worthy brain monitor.

为了跟踪象海豹的睡眠，科斯塔的研究生杰西卡·肯德尔-巴建造了一个适合深海的大脑监测器。

Fittest, in biology, means makes-the-most-offspring, and 96% of elephant seal males get a big zero for fitness!

在生物学里适者生存意味着可以有自己的幼崽，但是 96％的象海豹并不是这样。

To track elephant seal's sleep, Costa's graduate student Jessica Kendall Bar built a deep seaworthy brain monitor.

为了追踪海象的睡眠，Costa 的研究生 Jessica Kendall Bar 建造了一台适用于深海的大脑监测器。

This seems like the ideal situation not just for elephant seals, but for many animal species.

这不仅仅对于海象而言是一个理想的情况，对很多其他的动物来说也是如此。

Researchers discovered this by outfitting elephant seals with brain-monitoring rubber caps, but we'll get back to that.

研究人员通过给海象配备大脑监控橡皮帽发现了这一点，我们稍后会说到这一点。

The other 96% of male elephant seals just use up resources and don't contribute anything to the next generation.

剩下那百分之九十六的雄性仅仅是用了资源，对下一代没做出任何贡献。

Point Reyes' beaches are vital to elephant seals.

Point Reyes 的海滩对象海豹来说至关重要。