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

The new research, led by the Center for Whale Research in collaboration with the University of Exeter, has been published in ...

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

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...

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 ...

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

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