Scientists documented 34 remarkable cases of wild killer whales trying to give food to humans across four oceans over 20 ...

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

Dubbed "allokelping," it might be a unique cultural phenomenon that's as endangered as the orca population itself ...

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

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

The encounter, observed by snorkelers in Norway, “involved repeated episodes of gentle, face-to-face oral contact.” ...

Killer whales have been caught using seaweed to rub and groom each other in what scientists say is the first evidence of marine mammals making their own tools.

A skipper was stunned when he spotted a pod of eight killer whales in UK waters – in an extremely rare sighting. Andrew ...