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

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?

A new study documents wild orcas offering food to humans across the globe, leaving scientists puzzled about the motive behind ...

Orcas often share food with each other—it’s a prosocial activity and a way that they build relationships with each other,” ...

Orcas, also known as killer whales, are among the most intelligent and social of marine mammals. They live in tight-knit pods ...

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

This is the first documented evidence of its kind of marine mammals fashioning tools out of objects in their environment, according to the Center for Whale Research.

Orcas (Orcinus orca) don’t appear to be big fans of yachts, but some of them may be curious about humans themselves.According to a study published on June 30 in the Journal of Comparative ...

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 ...