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

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Footage released by animal activist groups show the orcas Wikie, 23, and her 11-year-old son Keijo swimming aimlessly around the abandoned park.

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

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

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

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

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

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

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

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