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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, …

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

    Nov 20, 2025 · 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 …

  3. Octopus | National Geographic Kids

    The octopus performs its famous backward swim by blasting water through a muscular tube on the body called a siphon. Octopuses also crawl along the ocean’s floor, tucking their arms into …

  4. 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 …

  5. 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 …

  6. 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 …

  7. 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?

  8. 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, …

  9. Exploring the Fascinating World of Octopus Species

    Octopuses are fascinating marine creatures known for their intelligence, adaptability, and unique physical characteristics. As members of the class Cephalopoda, octopuses belong to the order …

  10. 28 Types of Octopus (With Pictures) – Identification Guide

    Apr 25, 2025 · With approximately 300 species, they are found in oceans worldwide, from shallow reefs to deep-sea trenches, they thrive in diverse habitats. Their ability to change color and …