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BiologyRestricted to sandy, quiet water areas and is unable to form burrows where the substrate is disturbed by water movements, is muddy or consists of sand with a particle diameter > 0.5 mm. Food consists of slow moving benthic organisms like chironomid larvae, gastropods, bivalves and amphipods. On exposed shores, they occur deeper than 3.5 m (Ref. 28077, 2798). Occasionally intertidal.