New research shows southern resident killer whales grooming each other using kelp they’ve modified, and researchers think it’s the first time researchers have documented marine mammals making tools.

In a new sign of toolmaking in marine mammals, orcas in the Pacific Northwest were recorded rubbing stalks of kelp against each other’s bodies, a study shows. By Jacey Fortin A hundred feet or more ...

Many members of the animal kingdom, from birds to elephants, have been known to make and use tools. Now we can add another unexpected animal to the list – killer whales. A team of whale experts has ...