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.

Researchers have observed a population of orcas that cut and position kelp tools between their bodies to scrub each other’s ...

We were amazed when we first noticed this behavior,” said Michael Weiss, research director at the Center for Whale Research in the U.S. state of Washington. What started as a puzzling observation in ...

Whales travel through the ocean, lunging, leaping, and playing, with grace and swiftness that belies their huge size. The ...

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

In recent science news, killer whales demonstrate intelligence by using seaweed as grooming tools. Europe's satellite venture ...

A discovery of unique killer whale behavior may be the first documented time a marine species has been seen using and ...

Southern resident killer whales have been caught on drone video crafting kelp tools to groom one another—an unprecedented ...

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

Photographer Brian Skerry swims with killer whales and discovers these apex predators have unique cultures that aren’t that different from our own. An Orca calf swims with two adults through ...