A humpback whale

In 1919, for example, a humpback whale with a pair of leglike appendages over a metre long, complete with a full set of limb bones, was caught off Vancouver Island in Canada.

例如，1919年，在加拿大温哥华岛附近捕获了一条座头鲸，它有一对长达1米多的腿状附肢，还有完整的整套肢骨。

All the males in a humpback whale population usually sing just one song at any given time.

所有的雄性座头鲸们在某个特定的时间段都唱同一首歌。

Forty tons of gleaming muscle, a humpback whale blasts out of the water near South Africa.

在南非附近，一头有着四十吨力气的座头鲸冲出了水面。