octopus

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octopus Predatory, cephalopod mollusc with no external shell. Its sac-like body has eight powerful suckered tentacles. They feed mostly on crabs and other shellfish, paralysing their prey with poison. Many of the 150 species are small, but the common octopus (Octopus vulgaris) grows to 9m (30ft). Family Octopodidae.

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