Killer whales, or orcas, are apex saltwater predators, swimming through every ocean and dining on a remarkable variety of prey — even slaughtering great white sharks for their livers and killing blue whales. At Live Science, you can learn all about these phenomenal mammals, including why orca males are burnouts and the reason killer whales get sick in captivity. Marvel at extremely rare white killer whales and other exciting sightings with the latest orca news, features and articles from our expert writers and editors.
Discover more about orcas
—Orcas: Facts about killer whales
—Orcas have sunk 3 boats in Europe and appear to be teaching others to do the same. But why?
—5 gruesome killer whale attacks
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