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

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

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

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

Prior to this instance, the “tongue-nibbling” had only been observed a handful of times in captivity. First seen in captive ...

They amuse us by wearing salmon hats, enrage us by sinking our expensive yachts, and now they have been documented sharing their meals with us – why?

Orcas are brilliant creatures. Their brains are highly developed when it comes to problem-solving skills, cognition, and ...

Combined with their recent fad for sinking yachts, killer whales are starting to look like the Robin Hoods of the sea.

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

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