Picture a dolphin diving toward the seafloor with something odd on its nose. It is not a shell or a fish. It is a sea sponge. The dolphin isn’t playing; it’s using the sponge as a diving mask: a clear ...

Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica. Some also live in rivers, including the Amazon River in South America and the Ganges ...

Behavioral ecologist Michael Weiss was browsing through new drone footage of the orca pods he studies in the Salish Sea when he spotted one of the killer whales carrying something green in its mouth ...

BOTTLE NOSE DOLPHIN SWIMMING FAST AND PLAY WITH SPONGE© Yann hubert/Shutterstock.com In Shark Bay, Western Australia, some Indo-Pacific bottlenose dolphins use sponges as tools while they hunt.