Recently, people have spotted killer whales engaging in some unique behavior. They are rubbing their bellies along the rocks ...

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 ...

'Amongst all the different killer whale populations around the world, there's only a couple that have been observed doing this behavior,' one expert said ...

Northern resident killer whales and Pacific white-sided dolphins have been filmed hunting Chinook salmon together for the ...

SEATTLE -- Wild orcas on more than 30 occasions in four oceans have attempted to share their prey with people, potentially to develop relationships with humans, researchers have found. In each of the ...