Researchers documented 34 instances of purported prey-sharing behavior, which suggests orcas may be altruistic and capable of ...

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

The rare and awe-inspiring gestures were documented off the coasts of B.C., California, New Zealand and Norway. Researchers ...

Far from the fearsome reputation implied by their name, “killer whales”, orcas sometimes offer people gifts of food. Why ...

Wild orcas on more than 30 occasions in four oceans have attempted to share their prey with people, potentially to develop ...

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

In a new sign of toolmaking in marine mammals, orcas in the Pacific Northwest were recorded rubbing stalks of kelp against ...

A pod of humpback whales encountered a group of killer whales during feeding time off the coast of California. On June 24, a ...

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

Researchers using a new drone say they have observed killer whales finding and modifying stalks of kelp to preen each other.

And killer whale youngsters are fond of playing kelp keep-away. But what the southern residents are doing with the kelp ...