Though researchers have some best guesses, nobody seems to know for sure why exactly a killer whale in Washington state was ...

There have been isolated reports in the past of killer whales (also known as orcas) attacking a whale shark. But a study, published Friday in the journal Frontiers in Marine Science is the first ...

KILLER whales have declared war on the world's biggest sharks as they train themselves in new deadly skills to kill the sea beasts. Orcas have been spotted in the Gulf of California hunting down ...

Marine biologists have documented a remarkable hunting strategy employed by killer whales in the southern Gulf of California, in which they harvest whale sharks' organs. Researchers in Mexico have ...

Orcas, better known as killer whales, have been spotted hunting whale sharks, the world's largest shark species, that can grow up to 40 feet -- which has surprised the scientists. The orca pod ...

Killer whales themselves can grow to be up to 26 ft long (8 m) and weigh in excess of 6 tons. Whale sharks are filter feeders, which means they have large mouths with which to eat plankton and ...

Scientists have believed that killer whales, or orcas, could kill whale sharks for a long time, but had not been able to actually document exactly how they do it. New images from Frontiers in ...

Pictures and videos have revealed new, specialised hunting techniques used by killer whales to attack the world's largest fish, according to scientists. On four occasions caught on video ...