in fact, at least six species of baleen whales have been detected singing in the region.

事实上，在这个区域至少监测到了六种须鲸的声波。

baleen whales have been tracked by autonomous gliders before, by researchers at woods hole oceanographic institution, massachusetts.

马萨诸塞州的woodsholeoceanographic研究的研究员们以前是用自主滑翔器来跟蹤须鲸。

populations of large baleen whales now store only 15 percent of the carbon they had before whaling.

大长须鲸种群现在所储存的碳只有捕鲸前的15%。

large baleen whales primarily use the lower frequencies and are often limited in their repertoire .

大的须鲸主要使用低频，在它们所有的技能中它们使用的很少。

modern-day baleen whales are among the largest creatures that have ever lived.

现代须鲸是地球上存在过的最大的物种之一。

other baleen whales are the blue, fin, gray, humpback, and sei whales and the rorqual.

其它的须鲸有蓝鲸、鳍鲸、灰鲸、驼背鲸、鳕鲸和鲸。

it was a time when the killer whales, or 「killers」 as they were then called, helped the whalers catch the baleen whales that were on their annual migration.

在那个时期，杀人鲸，正如当时他们被称呼的，帮助捕鲸者捕杀在每年迁移途中的须鲸。

large baleen whales are of special concern.

大型鲸须鲸是最受关注的物种。

now a new study suggests that all this destruction can be traced back to humans overfishing sperm and baleen whales between 1946 and 1979.

现在，一项新的调查显示，所有的这些毁坏都可以归咎于人类在1946年到1979年期间过度捕捞抹香鲸和须鲸。

baleen whales have no teeth, feeds mainly on shrimp and small fish;

须鲸没有牙齿，主要吃虾和小鱼；

they are one of only three known shark species that filter feed, as baleen whales do, swimming slowly through plankton-rich water, maws agape.

人类已知只有三种鲨鱼是过滤取食的，鲸鲨就是其中一种。 取食的时候，它们就像长须鲸一样大张着嘴，缓慢地游过长满了浮游生物的水域。

a study in the journal science shows that bony fish filter-feeders spent 100 million years developing and occupying the niche that baleen whales do now.

发表在《科学》杂志上的一项研究发现，在鲸鱼之前，滤食性硬骨鱼是海洋中滤食性生物的霸主，其统治地位长达1亿年。