We've gone over where coral reefs are usually formed—along the edges of shallow ocean banks in tropical or subtropical regions, and the fact that they are declining at an alarming rate.

我们已经对珊瑚礁通常是在哪里形成的问题进行了讨论，它们是在热带或亚热带地区沿着浅海海岸的边缘形成的，而它们的数量正在以惊人的速度减少。

youdao

So the penguins in Antarctica that feed in the open ocean are doing okay; the penguin species that feed by just dropping off the ice shelves, like the Adelie and the emperor (pictured), are declining.

因此，在南极洲远海带捕食的企鹅适应得比较好，而只靠从冰架上跃入水中捕食的阿德利企鹅和帝企鹅(如图所示)则面临衰落。

youdao

Previous research by Dr Baum's team has found that sharks are declining rapidly in parts of the Atlantic Ocean.

BBC: RELATED BBC SITES