Orcas off the west coast of the US are grooming each other with kelp, in a rare sighting of marine mammals manufacturing and using tools. For several years, scientists have been keenly observing ...

To start a kelp-based grooming session, an orca places the bull kelp stipe on its face and nuzzles against another killer ...

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

Killer whales turn kelp stalks into tools that they use to groom each other while cleaning their own skin, too, observations suggest.

The footage conveyed a surprising trend: Dozens of orcas across all pods and age groups were using kelp to groom each other. While orcas have been known to drape kelp over their own bodies, ...

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of ...

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 ...

FRIDAY HARBOR, Wash. — In a paper published this week, researchers shared evidence indicating Southern Resident orca whales may not only use tools, but they are fashioning them to complete a ...

Because the orcas are using the kelp collaboratively to massage each other, the behaviour has been named "allokelping" — allo being a term used in biology to signal "different" or "other".

Orcas off the west coast of North America are grooming each other with kelp, in a rare sighting of marine mammals manufacturing and using tools. For several years, scientists have been keenly ...