aquatic

这个水族馆展示了各种水生生物。

The ___aquatic exhibit displays various aquatic creatures.

海豚是一种喜欢在水里生活的水生哺乳动物。

Dolphins are ___aquatic mammals that enjoy living in water.

他们参加了学校的游泳队，特别喜欢水上运动。

They joined the school swim team and especially enjoy ___aquatic sports.