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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

    Jan 21, 2026 · 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. 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 …

  4. Ten Wild Facts About Octopuses: They Have Three Hearts, Big Brains …

    Mar 13, 2024 · Octopuses, those whip-smart, bizarre cephalopods, embody everything creepy and mysterious about the sea. Their soft, squishy bodies, lurking in the oceans’ dark reaches, have …

  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 | 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 small...

  7. 27 Types of Octopus in the Ocean - Aquarium Whisperer

    Mar 25, 2024 · From the tiny Star-Sucker Pygmy Octopus to the large and clever Giant Pacific Octopus, there are many kinds to discover. In this article, we will explore 27 different types of octopuses. We …

  8. Octopuses keep surprising us – here are eight examples how

    An octopus has blue blood and three hearts. But these aren't even the most astonishing things scientists have discovered about these beguiling marine animals. Here are some additional ways octopuses …

  9. Octopus Facts, Types, Lifespan, Classification, Habitat, Pictures

    Octopuses have a relatively short lifespan, with certain species living for just six months. On average most of them do not survive for more than one or two years. The Giant Pacific Octopus is said to …

  10. Octopus Facts For Kids & Adults: All You Need To Know About …

    Apr 16, 2019 · Octopus facts, pictures and in-depth information. With eight legs, high intelligence, a built-in jet engine, a venomous bite, and the ability to change color at will, octopuses can seem more like …