what are aquatic animals
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Aquatic animals live in the water and depend on it for survival. There are various groups of aquatic animals including fish, mammals (whales), mollusks (sea snails), cnidarians (jellyfish), and crustaceans (crabs). They either live in fresh water or salt water and can be either vertebrates or invertebrates.
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An aquatic animal is an animal, either vertebrate or invertebrate, which lives in the water for most or all of its lifetime. ... Aquatic animals may breathe air or extract oxygen that dissolved in water through specialised organs called gills, or directly through the skin.
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