About Glycymeris yessoensis (G.B.Sowerby Iii, 1889)
Glycymeris yessoensis is a species of bivalve mollusc that belongs to the family Glycymerididae. This species burrows in soft sediment in shallow Pacific Ocean waters off the coasts of China and Japan. It commonly forms a commensal relationship with a polychaete worm. Glycymeris yessoensis is native to the north central Pacific Ocean, occurring in the Yellow Sea and the Sea of Japan, with its range extending north to the Kamchatka Peninsula. It burrows in sand at depths between the intertidal zone and 60 m (200 ft). This bivalve can live up to 45 years. It is a filter feeder: it draws water in through one siphon and expels it through another. It often serves as a commensal host for the boring polychaete worm Polydora glycymerica. This worm burrows into the bivalve's shell, creating a U-shaped burrow near the mollusc's siphon, and intercepts some food particles from the feeding current the mollusc produces.
