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

Like a proud cat leaving a bird on its owner's doorstep, orcas—also called killer whales—may sometimes offer to share their ...

Jared Towers was in his research vessel on two separate occasions watching killer whales off the coast of Vancouver Island ...

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 ...

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

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

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

The more we learn about orcas, the more remarkable they are. These giant dolphins are the ocean's true apex predator, preying ...

Other animals including some early humans, non-human primates, sea otters, elephants, and bird species are known to use ...

In the first known toolmaking by a marine mammal, southern residents have been documented detaching lengths of seaweed and ...

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