Abstract: A relatively small quantity of scallop spats (ChLamys farrer) were obtained frnm the coastal waters of Lhimao Wan of uiahaxxg .ian in 1978. Since 1979 a series of surves were carried out to investigate the distribution of larvae and the potentiality of this species in order to estimate the value of egoitation of the bay. Tha results indicata that this region is situated at the autrshelf of the ooast,the variation of current condition makes the settlement of the spat to be unstable and also the shape of the bay is shallow and open. It is not valuable to exploit far commercial mariculture ground.