Some orcas have developed a deadly taste for liver — specifically, the livers of great white sharks. According to NBC ...

In a rare video captured by a whale watching expedition off the coast of San Diego this week, a killer whale teaches its baby how to hunt by headbutting a dolphin, causing it to flip several times in ...

Orcas in the Gulf of California off the coast of Mexico have been spotted hunting young great white sharks by flipping them over to incapacitate them before eating their energy-filled liver, new ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. It was an orca ...

Domenic Biagini, owner of Gone Whale Watching San Diego, exclaimed via Instagram. The accompanying footage, captured by the company’s Erica Sackrison, shows one orca ambushing a dolphin from below, ...

You never know where the black-and-white beauties will show up to feast. A pod of orcas usually found in warmer waters off Mexico have been hanging around Southern California in the last week and were ...

Collectively, both whales and dolphins, as well as their porpoise cousins, are known as cetaceans. The cetacean order comprises two subgroups: baleen whales (including gray whales, right whales, blue ...

The name "killer whale" is a misnomer. Orcas, aka killer whales, are actually dolphins. Orcas are the largest member of the Delphinidae family, which includes dolphins and other species. Like dolphins ...