He studies humpback whales at the University of Plymouth in Britain.

他在英国普利茅斯大学研究座头鲸。

Our dolphins and whales at Marina Zoo are very well cared for.

我们在滨海动物园的海豚和鲸鱼得到了很好的照顾。

We'll see whales at the surface, that's only a very small fraction of the time that they're actually visible to human eyes.

我们会在水面看到鲸鱼，这只是人眼实际可见鲸鱼的一小部分时间。

She told the Reuters news agency that a drone has been used for the first time to collect whale mucus from humpback whales at sea.

她告诉路透社记者，首次在海上使用无人机收集座头鲸的粘液。

That means marine predators didn't have time to feast on the dead or dying whales at sea, and land predators didn't scavenge the remains, either.

这意味着海洋食肉动物没有时间在海上捕食死去或垂死的鲸鱼，陆地食肉动物也没有吃掉残骸。