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  1. Octopus - Wikipedia

    Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviourally diverse invertebrates. Octopuses inhabit various ocean habitats, including coral reefs, …

  2. Octopus | Description, Behavior, Species, & Facts | Britannica

    4 days ago · An octopus is any eight-armed cephalopod mollusk of the order Octopoda. The true octopuses are members of the genus Octopus, a large group of widely distributed shallow-water …

  3. Octopuses, facts and information | National Geographic

    There are around 300 species of octopus and they are found in every ocean. Most live on the seafloor, but some, like the paper nautilus, drift nearer to the surface. Octopuses mostly feed on...

  4. Octopus | National Wildlife Federation

    Octopuses live in coastal marine waters and spend much of their time in dens—small holes and crevices in rocks and coral. They are generally solitary and territorial. Moray eels, fish, seals, sperm whales, …

  5. Octopus facts | Molluscs | BBC Earth

    Sep 22, 2024 · Octopuses are among the most unique, diverse, and intelligent marine invertebrates on Earth. Inhabiting environments from shallow shores to the dark, crushing depths of the deep sea, …

  6. Octopus - Types, Size, Anatomy, Habitat, Diet, Lifespan, & Life Cycle

    Oct 31, 2025 · Octopuses are exclusively marine mollusks that constitute the order Octopoda within Cephalopoda, a class that also includes squids, cuttlefish, and nautiloids. They are easily recognized …

  7. Octopus: Facts about the 8-armed geniuses of the sea - Live Science

    Feb 12, 2025 · Octopuses are famous for their bizarre bodies, quick thinking and mischievous personalities. There are more than 300 species of octopus that scientists know about, and likely …

  8. Animals 101: Octopuses - Education

    Animals 101: Octopuses How many hearts does an octopus have? How do species like the mimic octopus camouflage themselves? Find out the answer to these questions and learn other octopus …

  9. There Are 300 Types of Octopus Species, Some With Internal Shells

    Feb 26, 2025 · Octopuses are known their eight legs, squishy bodies and impressive problem-solving skills. But did you know there are over 300 types of octopus species?

  10. Octopus - New World Encyclopedia

    The term octopus may also refer to only those creatures in the genus Octopus. Like all cephalopods, octopuses have bilateral symmetry, a prominent head, and a modification of the mollusk foot into the …