The ringed seal has a population of up to seven million, making it the most common seal in the Arctic Circle.

环斑海豹的数量高达七百万，这使它们成为北极地区最普通的海豹。

Bowhead whales feed on plankton, while ringed seals eat fish and other animals in which mercury has had the chance to accumulate.

因为露脊鲸以浮游生物为食，而环斑海豹则吃鱼和其它可能积聚汞的动物。

Instead of the ringed seals they ate out on the ice, the bears are foraging on bowhead whale carcasses, cast up on the beach.

它们不再在冰上捕食环纹海豹，而是开始以被冲上海滩的的露脊鲸尸体为食。

Certain animals, like ringed seals and beluga whales, use sound to communicate and navigate through the dark depths of the ocean.

某些动物， 如环斑海豹和白鲸，利用声音在黑暗的海洋深处进行交流和导航。