Researchers say an endangered killer whale that drew international attention as she carried her dead calf on her head for more than two weeks is finally back to feeding and frolicking with her pod.

Orcas in the Gulf of California appear to have gained special skills to hunt and kill the world’s largest fish, according to a new study. Whale sharks, which grow up to 18m long, are known to feed in ...

It was an overcast day off the coast of Morro Bay when one group of whale watchers spotted a surprising sight: a group of about a half-dozen killer whales having a grisly feast. The orcas were likely ...