Detached orca fins scored with distinctive tooth marks suggest that killer whale cannibalism is happening — and it might ...

Two groups of killer whales are engaging in a terrifying, bloody cannibalistic war beneath the ocean’s surface, where gangs ...

Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called ...

Add Yahoo as a preferred source to see more of our stories on Google. A pygmy sperm whale was attacked by a pod of orcas off the coast of Madeira. Orcas preying on marine mammals are rarely seen in ...

NEWPORT BEACH, Calif. — A rare sighting of a pod of orcas off the coast of Orange County had whale watchers and marine experts buzzing last Thursday. For passengers on whale-watching boats that day, ...

Rare J Pod sighting draws attention as endangered orcas pass Tacoma with calf Orca Network confirms early migration linked to salmon availability in region Officials urge minimal boat noise to avoid ...

Learn why blue whale calves are prime orca targets and how their massive mothers use slipstreams, allies, and shockwaves to ...