Relationships unclear; some analyses place present species closest to L. hemprichii, others to L. heermanni. Monotypic.
SE Russia (Kuril Is, Sakhalin, Moneron I, Popov I, Peter the Great Bay), Japan, Korea and E China (Shandong, Zhejiang#R, Fujian). More widespread in winter, occurring S to N East China Sea.
Food and feeding
Status and conservation
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