Researchers in New Zealand have made what they believe is the first recording of a shark actively making noise.

Sand tiger sharks, also known as gray nurse sharks ... Their staple is small fish, but they will eat crustaceans and squid as well. They occasionally hunt in groups, and have even been known ...

Spatial regulations could also help ... shark conservation. More information: Leonardo Manir Feitosa et al, Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing, Fish and ...