EN
Studies on molluscs of selected water bodies of the city of Szczecin (NW Poland), carried out in 1997, revealed the occurrence of 11 snail and 5 bivalve species. Two groups of water bodies were distinguished, of different species composition: Głębokie lake on one hand and the ponds with the Osówka stream on the other. Overall dominants were Potamopyrgus antipodarum (Gray), an expanding species, and Sphaerium corneum (L.).