A hole in ice to which aquatic mammals, such as dolphins, come to breathe.

冰上的孔穴生活在水中的哺乳动物，如海豚，前来换气的冰面上的孔。

youdao

A hole in ice to which aquatic mammals, such as dolphins, come to breathe.

生活在水中的哺乳动物，如海豚，前来换气的冰面上的孔。

youdao

A hole in ice to which aquatic mammals, such as dolphins, come to breathe.

冰上的孔穴：生活在水中的哺乳动物，如海豚，前来换气的冰面上的孔。

youdao

There is evidence that other apes, such as gorillas and orang-utans, show cultural differences, as well as creatures such as whales and dolphins.

BBC: Cultural habits of chimps

Well-known marine animals, such as whales or dolphins represent a tiny fraction of marine biodiversity.

UNESCO: THEMES

To date, most research has focused on the impact sound might have on marine mammals, such as whales and dolphins.

BBC: Earth News - 'Noise pollution' threatens fish