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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. Killer whale | Definition & Facts | Britannica

    Jan 2, 2026 · More than 20 species names have been applied to the killer whale, but a consensus now recognizes only O. orca. Killer whales were formerly referred to as grampuses, but that term is now a …

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

    A wild orca pod can cover over 99 miles (160 kilometers) a day, foraging and socializing. They were give the name "killer whale" by ancient sailors who saw them preying on large whales. Orcas are still …

  4. Orcas (Killer whales) | National Geographic

    Orcas are highly intelligent, social mammals that have long been a part of marine park entertainment, performing shows for audiences. However, it's become increasingly clear that orcas do not...

  5. Killer Whale - NOAA Fisheries

    Aug 18, 2025 · Scientific studies have revealed many different populations with several distinct ecotypes (or forms) of killer whales worldwide—some of which may be different species or subspecies. They …

  6. Orca - National Wildlife Federation

    Learn facts about the orca’s habitat, diet, life history, and more.

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

    Calves at birth weigh about 180 kg and are about 2.4 m long (8 ft). The Killer Whale's large size and strength make them the fastest marine mammals, often reaching speeds in excess of 56 km/h …

  8. Orca - Ocean Conservancy

    Orcas are very easy to spot in the ocean—their iconic black and white coloring gives them away. Orcas are incredibly powerful hunters and eat fish, seals, sharks and more. People began calling orcas …

  9. Orcas: Facts about killer whales - Live Science

    Jan 28, 2025 · Orcas are often called killer whales, even though they almost never attack humans. They live in every ocean around the world, from the warm waters near the equator to the icy depths …

  10. Orca | National Geographic Kids

    Knocked into the sea, the seal becomes a meal for one of the ocean's top predators—the huge orca, or killer whale. Orcas hunt everything from fish to walruses, seals, sea lions, penguins,...