They pick up rocks in their jaws 它们用长嘴捡起石块
After dark, predatory dolphin fish emerge from their daytime lairs among the rocks. 到了晚上 掠食性的长颌鱼纷纷 游出它们白天潜伏的石缝
and they're now roosting among the rocks. 栖身于岩石缝隙之中