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 ...

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 ...

A recent study published in the research journal Oceans has added yet another interesting, human-like interaction to the pantheon of orca behaviors observed in the wild. This time, the orcas were ...

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 ...

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

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

Slow-motion review showed three distinct bouts: 10 seconds, twenty-six seconds, and eighteen seconds. Between bouts the ...