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  1. Orca - Wikipedia

    The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. The only extant species in the genus Orcinus, it is recognizable by its distinct …

  2. Is an Orca a Whale or a Dolphin? (Explained) - Wildlife Informer

    The Latin name for orcas or killer whale is Orcinus orca, it also reflects this perception of orcas feeding on huge whales. Orcinus means ‘of the realm of the dead,’ and orca alludes to a kind of whale. Is an …

  3. Killer whale | Definition & Facts | Britannica

    Apr 21, 2026 · Killer whale, largest member of the dolphin family (Delphinidae). The killer whale is easy to identify by its size and its striking coloration: jet black on top and pure white below with a white …

  4. Facts about orcas (killer whales) - Whale & Dolphin Conservation USA

    Orcas are incredibly popular as they are the most widely distributed of all whales and dolphins, found in every single ocean! They are very familiar with their black and white colouring but actually, …

  5. Orcas (Killer whales) | National Geographic

    What are orcas? Orcas, or killer whales, are the largest of the dolphins and one of the world's most powerful predators. They're immediately recognizable by their distinctive black-and-white coloring.

  6. Killer Whale - NOAA Fisheries

    The killer whale is the largest member of the dolphin family. The population of Southern Resident killer whales in the Pacific Northwest is one of the most critically endangered marine mammals. Learn …

  7. Orca vs Dolphin: What's the Difference? - American Oceans

    The size of orcas and dolphins is one of their main distinctions. Killer whales, commonly referred to as orcas, are substantially larger than dolphins. Dolphins normally vary from 2 to 4 meters in length and …

  8. Orca - National Wildlife Federation

    Orcas, also known as killer whales, are among the world’s most easily recognized marine mammals. The largest member of the dolphin family, orcas are highly intelligent and social animals, spending …

  9. About Orcas - Dolphin Project

    Apr 21, 2026 · About Orcas Orcas (Orcinus orca) or killer whales are the world’s biggest dolphins, possessing the second-largest brain of all marine mammals. They belong to the order Cetacea (from …

  10. Orca (Orcinus orca) | U.S. Fish & Wildlife Service

    Killer Whales are distinctively marked, with a black back, white chest and sides, and a white patch above and behind the eye. Calves are born with a yellowish or orange tint, which fades to white. Killer …