Orcas have spent the past few years rewriting their public image from charismatic performers to unpredictable disruptors, ...

From sinking boats and feasting on shark livers to dining on whale tongue and tossing porpoises around for fun, orcas are ...

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

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 ...

Killer whales have been caught using seaweed to rub and groom each other in what scientists say is the first evidence of ...

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 ...