Delectopecten randolphi (Dall, 1897)

Common name: Randolph's scallop  Delectopecten

D. randolphi is a North Pacific widespread species (Fig. 8). It is distributed in the Sea of Japan - Posjet Bay, Peter the Great Bay, eastern coastline waters of Honshu Island (Sagami Bay); in Okhotsk Sea - along eastern and western coastlines; in Bering Sea - along eastern coastline. The mollusk inhabits the mud grounds at a depth of 418-3080 m (Scarlato, 1981). This species occurs at temperature range of near-bottom waters of 0.2-2.5 °C.

The largest specimen known from the Peter the Great Bay had dimensions of 23.5 x 27.0 mm.

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