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。

You can see how successful this feeding strategy is by it's belly full of algae cells.

你可以通过它充满藻类细胞的腹部看到这种喂养策略是多么成功。

Figuring out what this creature's face actually looked like would take paleontologists years, both because of how its skull fossilized and because of its very odd feeding strategy.

弄清楚这种生物的脸到底长什么样子需要古生物学家多年的时间，这既是因为它的头骨是如何变成化石的， 也是因为它非常古怪的进食策略。

Plus, weirdly enough, it turns out that it takes a lot of energy to echolocate -- especially when you're stationary - so this whole feeding strategy seems pretty inefficient.

另外，奇怪的是，事实证明回声定位需要大量能量——尤其是当你静止不动时——所以整个喂食策略似乎效率很低。