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

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

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 ...

We're replacing BBC Sounds outside the UK and bringing you BBC.com, a seamless way to read, watch, and listen - all in one ...

The Orca, or killer whale, is one of the ocean’s most formidable predators. Though often called whales, Orcas actually belong to the dolphin family,yet their power, intelligence, and hunting abilities ...

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

The apex predators have offered up fish, birds, turtles and whales to humans around the world, according to the study.

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