When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange.

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

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

O rcas are easily recognized by their jet-black bodies punctuated with striking white markings, most notably the “eye patch” ...

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

Efforts to save the Northwest’s endangered orcas are not working on either side of the U.S.-Canada border, according to an ...

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

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

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The population of Bigg’s killer whales — which is believed to be in the hundreds — has grown since the government stopped ...