Groove-throated whales such as humpbacks have dense baleen that looks like a folded accordion.

二是须鲸科——比如座头鲸，它的鲸须非常密，像合起来的手风琴。

Scientists studied three species of baleen whales – blue, fin and humpback.

科学家研究了三种须鲸——蓝鲸、长须鲸和座头鲸。

We're trying to understand the behavior of baleen whales, of minke whales and humpback whales.

我们试图了解须鲸、小须鲸和座头鲸的行为。

And they concluded that Llanocetus had sharp teeth and large gums-but no baleen.

他们得出的结论是，刻齿拉诺鲸拥有锋利的牙齿和巨大的牙龈，但是没有鲸须。

They say it's the first passive feeding strategy ever seen in a baleen whale.

研究人员表示，在他们目前观察到的须鲸行为中，这是第一例被动进食策略。

Because I've seen big baleen whales, sir, whales measuring up to 100 feet long!

我看过的大鲸鱼，先生，是长到一百英尺的大鲸鱼！

As water streamed by, filaments from neighboring baleen plates naturally twined together and trapped the beads.

随着水源源流过，鲸须板上相邻鲸须细丝自然缠绕在一起并收集珠子。

But this isn’t something baleen whales do.

但这不是须鲸所做的事情。

These are all baleen whales which use hairy baleen plates instead of teeth to trap their prey.

这些都是须鲸，它们使用毛茸茸的须板代替牙齿来捕捉猎物。

And they get picked up by other baleen whales, possibly via their skulls, which conduct the vibrations along to their ear bones.

其他须鲸能接收到这些声音，可能是通过它们的头骨，并将振动传导到耳骨。