Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

Learn how differences in diet and behavior split orcas off northern Japan into resident and transient groups — and what their ...

Across the world’s oceans, killer whales share the same striking black‑and‑white look yet live radically different lives.

The orca on the left carries kelp in its mouth, allowing the whales to "allokelp," or roll the plant between their two bodies. - Center for Whale Research Editor’s Note: Call to Earth is a CNN ...

A study by the University of Glasgow’s Scottish Marine Animal Stranding Scheme (Smass) has revealed a dramatic rise in marine mammal strandings along Scotland’s coasts. More than 5,100 stranded ocean ...

(CNN) — 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 ...

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 ...