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

一是露脊鲸——比如头鲸，其鲸须板长而富有弹性，上面长着精细的流苏状鲸须。

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。

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的开阔水面游去。

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

头鲸长“流苏”形成的过滤器效率更高，能够完美地捕获细小磷虾。

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的歌，并随时即兴创作新的歌。

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。

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

您以前捕捉的都是平常的白鲸，它并木敢冒险通过赤道的温热海水。

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

但头鲸的歌声更自由，她说。

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的海洋动物也无法免疫这些变化。

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

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。

Stafford and other scientists compared the bowheads' songs to jazz music.

斯塔福德和其他家将头鲸的歌比作爵士乐。

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

因为露脊鲸以浮游生物为食，而环斑海豹则吃鱼和其它可能积聚汞的动物。

Scientists have studied the bowhead whale, to see if they have different versions of genes than other mammals.

家研究了头鲸，看看它们是否拥有与其他哺乳动物不同的基因版本。

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

它们不再在冰上捕食环纹海豹，而是开始以被冲上海滩的的露脊鲸尸体为食。

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，有脊鳍的动物，大头鲸也一样。它们通常比普通白鲸小一些啊！

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

寿命最长的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.

有些值得一提的例外是：巨口鲸在夏天发出的声音几乎是歌一样的和声，而座头鲸发出的则是复杂的过耳难忘的声音。

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，是因为不同的鲸群在融到一起，要把所有它们不同的歌融到一起。

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，一种用动物皮制成的长船， 希望能捕获头鲸。

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.

在他们历史的早期，他们设法开发了捕捉巨大的头鲸的技术，这是他们当时的主要食物来源。