Though they're called "killer whales," orcas are actually a type of dolphin.
(Image credit: slowmotiongli via Getty Images)
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Puget Sound Orcas To Remain on Endangered ListThe killer whales of Puget Sound are one of a kind.
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DNA Sheds Light on Rare Killer Whale TypeA scarcely seen type of orca is likely a distinct subspecies or species, researchers say.
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How Killer Whales Boosted Porpoise EcholocationHarbor porpoises likely evolved high-frequency sonar clicks to avoid orcas.
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Killer Whales May Have Been Trapped by Climate ChangeAs the planet warms, will we see more trapped sea mammals?
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'Mama's Boys' May Explain Killer Whale MenopauseMenopause allows aging killer whale mothers to care for their adult sons, new research shows.
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Image Gallery: Russia's Beautiful Killer WhalesOne all-white male orca stands out from the crowd.
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One of a Kind: All-White Killer Whale SpottedThe male orca got its name "Iceberg" from its towering white dorsal fin.
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False Killer Whales Focus Sound Waves to 'See' PreyFalse killer whales can focus their echolocation sounds on an object to get a better "view" of it.
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Antarctic Killer Whales Treat Skin with a Tropical VacationAntarctic killer whales take a "tropical vacation" to shed their skins, traveling over 5,000 miles in just 42 days.
