Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

The apex predators have offered up fish, birds, turtles and whales to humans around the world, according to the study.

Researchers documented 34 instances of purported prey-sharing behavior, which suggests orcas may be altruistic and capable of ...

A study published in the journal Oceans details the remarkable chance encounter between a group of citizen scientists on a ...

Researchers have documented orcas dropping prey and other marine life in front of humans, as if offering us food. The orcas' ...

Orcas often share food with each other—it’s a prosocial activity and a way that they build relationships with each other,” ...

Shimron Hetmyer blasted an unbeaten 78 off 37 balls as Seattle Orcas continued their recent Major League Cricket revival with ...

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

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

Footage captures a pair of orcas nibbling each other's tongues in the Kvænangen fjords in northern Norway. Scientists think ...

Beluga whales ( Delphinapterus leucas) have also displayed mouth-to-mouth interactions in the wild. During a study on captive ...