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Mollusca Molluscs e.g. snails, slugs, mussels, cockles & clams
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Pelecypoda
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Predominantly southern and western shores of the UK from North Scotland to the Iberian Peninsula, including the Channel Isles (see additional information below). Recorded at Milford Haven.
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Lives embedded in lower intertidal and sub-tidal muds, sandy muds or gravels.
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Large (30-48 cm long) triangular, thin, shell tapering to a point, light yellow- brown to dark brown in colour. Fan-mussels live with their pointed end embedded in sediment, attached by abundant fine byssal threads. The posterior (broad) end protrudes from the surface. Often solitary but populations occur as small groups or patches of individuals forming small beds.
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