Seals and sea lions的意思|示意

Moreover, walruses and seals drive themselves through the water with thrusts of their hind flippers, but sea lions use their front flippers.

此外，海象和海豹用它们的后鳍推动自己在水中运动，而海狮用它们的前鳍。

They prey mainly on sea lions, seals, and small toothed whales.

它们以海狮，海豹，小型齿鲸为食。

Holy cow, there were a zillion sea lions and elephant seals right there.

我的天，那里简直有数不尽的海狮和象海豹。

Many seals live here as well as sea lions and the occasional sea elephant.

大量海豹也生活于此，还有海狮以及偶尔可见的海象。

So, it probably is the orcas that are causing the decline of all the smaller sea mammals mentioned in the passage - the seals, the sea lions, and the sea otters.

所以，很可能是逆戟鲸的捕食导致了文中提到的诸如海豹、海狮和海獭等小型哺乳动物的数量减少。

For example, over the past few decades, there's been a major collapse of the populations of harbor seals, fur seals, sea lions, and sea otters living on the coasts of western Alaska.

比方说，在过去的几十年里，生活在阿拉斯加西海岸的斑海豹、海狗、海狮和海獭数量极具下降。