Penguins call while hunting

By critically analyzing footage from video cameras attached to king, macaroni and gentoo penguins  breeding on Marion Island she found that not only are penguins calling underwater but their calls seem to be part of their hunting strategies.

Read the popular newpaper article here: https://www.hakaimagazine.com/news/penguins-call-underwater/

Or read the scientific article here: https://peerj.com/articles/8240/