pea crab

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pea crab

n
(Animals) any of various globular soft-bodied crabs of the genus Pinnotheres and related genera that live commensally in the mantles of certain bivalves
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Noun1.pea crab - tiny soft-bodied crab living commensally in the mantles of certain bivalve mollusks
crab - decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincers
genus Pinnotheres, Pinnotheres - type genus of the family Pinnotheridae: pea crabs
oyster crab, Pinnotheres ostreum - tiny soft-bodied crab living within the mantle cavity of oysters