Over time, that name morphed into "killer whales." Scientists don't know whether orcas kill for fun. The marine mammals do some things, like killing and tossing dead porpoises in the air ...

Orcas use advanced hunting tactics, working together like a wolf pack. They create waves to wash seals off ice, trap fish in bubbles, and even beach themselves to grab prey. Killer whales have ...

The grieving killer whale mom and her family — Tahlequah has two living sons — were spotted traveling together in Haro Strait off of Washington’s San Juan Island on the morning of Friday ...

A video posted by Aquatic Mammals depicts the orcas eating the prey. “I was definitely surprised by how close the killer whales were to the anglers,” Ochoa told McClatchy News. But ...

An orca calf less than 24 hours old has been spotted in a rare sighting of a newborn killer whale in Western Australia. The animals are regularly seen off Bremer Bay in summer, but calves are ...

The pod of CA56 killer whales (orcas) was spotted by a Davey’s Locker whale-watching boat about 12:30 p.m. just two and a half miles from Newport Beach harbor. A rare pod of killer whales was ...

Research has confirmed killer whales were responsible for bite wounds on a dead white shark that washed up on a beach near Portland, Victoria. It is the first killer whale predation on a white ...

Around the world, killer whales (Orcinus orca) have been observed preying on various shark species including white sharks (Carcharodon carcharias) -- as previously documented in California and ...