Very early in their history, they managed to develop the technology to hunt the huge bowhead whale which was a staple food source for them at that time.

他们历史早期，他们设法开发了捕捉巨头鲸技术，这是他们当时主要食物来源。

The bowhead's long fringe formed the more effective filter — perfect for catching tiny krill.

头鲸长“流苏”形成过滤器效率更高，能够完美地捕获细小磷虾。

One hypothesis states that bowheads might be singing so many songs because different populations are mixing together and bringing all their different songs to the mix.

有一种假设认为，头鲸会唱这么多歌，是因为不同鲸群融合到一起，要把所有它们不同歌曲融合到一起。

Instead of the ringed seals they ate out on the ice, the bears are foraging on bowhead whale carcasses, cast up on the beach.

它们不再冰上捕食环纹海豹，而是开始以被冲上海滩露脊鲸尸体为食。

Until now it's the bowhead whale you've hunted, and it won't risk going past the warm waters of the equator.

您以前捕捉都是平常白鲸，它并木敢冒险通过赤道温热海水。

Some tortoises live for nearly 200 years. Bowhead whales can live even a decade or two longer.

有些海龟活了将近200年。头鲸甚至可以比海龟多活一二十年。

Bowheads, belugas and narwhals head for open water on the southern edge of the Arctic Ocean.

头鲸、白鲸以及角鲸纷纷向北冰洋南端开阔水。

Balaenid whales, such as the bowhead, have long, springy plates with a delicate fringe.

一是露脊鲸科——比如头鲸，其鲸须板长而富有弹性，上长着精细流苏状鲸须。

Those animals are only members of the genus Balaenoptera furnished with dorsal fins, and like sperm whales, they're generally smaller than the bowhead whale.

这些东西不过是鲸科，有脊鳍动物，头鲸也一样。它们通常比普通白鲸小一些啊！

Bowhead whales feed on plankton, while ringed seals eat fish and other animals in which mercury has had the chance to accumulate.

因为露脊鲸以浮生物为食，而环斑海豹则吃鱼和其它可能积聚汞动物。

Each individual bowhead will come up with their own song and improvise new ones all the time.

每只头鲸都会唱自己歌，并随时即兴创作新歌曲。

For the tests, Werth submerged racks of humpback and bowhead baleen in a flow tank.

为了测试，Werth 将座头鲸和头鲸鲸须浸入沉淀池中。

And ocean dwelling animals like bowhead whales and narwhals aren't immune to these changes either.

而且像头鲸和独角鲸这样海洋动物也无法免疫这些变化。

Nelson Nungasat is captain of a whale hunting team. They rely on stable, thick ice to harpoon the 25 bowhead whales they're allowed to take each year for food.

Nelson Nungasat 是捕鲸队队长。他们依靠稳定、厚实冰来用鱼叉捕杀他们每年获准捕食 25 头头鲸。

Mice and rats reach the end of their lives after just four years, while for the bowhead whale, Earth's longest-lived mammal, death can come after 200.

老鼠和家鼠仅四年便走到了生命尽头，而头鲸——地球上寿命最长哺乳动物——却能活到200岁才迎来死亡。

And when they spot the whales, hunting crews set out on umiaks, long boats made of animal hide, in hopes of catching bowhead whales.

当他们发现鲸鱼时， 捕猎队伍会乘坐兽皮船，一种用动物皮制成长船， 希望能捕获头鲸。

The title of longest-lived mammal goes to another Arctic species: the bowhead whale, which was an estimated 211 years old.

寿命最长哺乳动物称号属于另一种北极物种：头鲸，估计年龄为211岁。

Notable exceptions are the nearly song-like choruses of bowhead whales in summer and the complex, haunting utterances of the humpback whales.

有些值得一提例外是：巨口鲸夏天发出声音几乎是歌曲一样和声，而座头鲸发出则是复杂过耳难忘声音。

Scientists think only male bowhead whales sing and that they are singing to find a mate.

科学家们认为只有雄性头鲸会唱歌，而且它们唱歌是为了寻找配偶。

But the songs of bowhead whales are freer, she said.

但头鲸歌声更自由，她说。