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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. 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...

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

    Orcas (also known as killer whales) are marine mammals. They belong to the sub-order of toothed whales (known as odontocetes) but are also the largest member of the dolphin family.

  4. 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 …

  5. Orcas are adopting terrifying new behaviors. Are they getting ...

    Dec 23, 2025 · From sinking boats and feasting on shark livers to dining on whale tongue and tossing porpoises around for fun, orcas are displaying some fascinating — and sometimes terrifying — …

  6. Killer whale | Definition & Facts | Britannica

    Dec 25, 2025 · Orcas are called killer whales because of their reputation as powerful predators in the marine world. The name comes from ancient sailors who watched orcas hunting large marine animals.

  7. Orca - National Wildlife Federation

    Even though orcas can see above and below water, it is their hearing and echolocation abilities that help them locate objects in the water. By emitting clicks and listening for echoes, orcas are able to …