Based on the data of investigation in the coastal region of Bohal Sea and Huanghai Sea in the year 1990,the pollution feature and concentration of heavy metals in 13 species of molluscs,are discussed in the paper. The average levels of heavy metals show;Huanghai Sea coastal area>Bohai Sea coastal area. The variety of concentrations of heavy metals in differnt species of molluscs has been observed. The levels of metals accumulated in Mytilus Edulis,Ostreagigas Thumberg and Arca Subcrenata may demonstrate the...