   Mollusk
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Sigma KEE - Mollusk
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mollusk
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Soft-bodied Invertebrate that is usually contained in a shell. Includes oysters, clams, mussels, snails, slugs, octopi, and squid.
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invertebrate |
An Animal which has no spinal column.
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gastropod | A Mollusk with a distinct head that has no shell (e.g. slugs) or a univalve shell (e.g. snails). | | | octopus | The octopus is a cephalopod mollusc of the order Octopoda. It has two eyes and four pairs of arms and, like other cephalopods, it is bilaterally symmetric. It has a beak, with its mouth at the center point of the arms. It has no internal or external skeleton (although some species have a vestigial remnant of a shell inside their mantles), allowing it to squeeze through tight places. Octopuses are among the most intelligent and behaviorally diverse of all invertebrates. [Wikipedia] | | | oyster | | | | scallop | | | | squid | |
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