Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

Orcas have been spotted giving each other rubdowns with kelp tools, rubbing pieces of the seaweed between their bodies.

TACOMA, Wash. — A pod of orca whales was spotted playing in Commencement Bay near Tacoma. Video shared with KOMO News by ...

Researchers have documented orcas dropping prey and other marine life in front of humans, as if offering us food. The orcas' ...

Rubbing against algae to slough off dead skin has been observed in other cetaceans, but never before with what can truly be ...

Slow-motion review showed three distinct bouts: 10 seconds, twenty-six seconds, and eighteen seconds. Between bouts the ...

Under the terms of a settlement agreement, there could soon be new federal protections for the Chinook, the largest of all ...

They amuse us by wearing salmon hats, enrage us by sinking our expensive yachts, and now they have been documented sharing their meals with us – why?

The Center for Biological Diversity and allies today secured court-ordered deadlines requiring the National Marine Fisheries Service to determine whether spring-run Chinook salmon in Oregon, ...

The discovery — published June 23 in Current Biology — constitutes the “first evidence” recorded of tool-making by marine ...

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...