A study was undertaken between 2007-2009 in the Dardanelles. Monthly sampling was carried out in 4 stations up to 10 m of water depths by using dredge. The samples were fixed and preserved in 5% formalin prepared in marine water. Morever, anatomical and morphological characteristics of identified species were illustrated with photographs. The specimens were examined the macroscopic and then microscopic under the light of binocular microscope. According to the results; total of 22 species belonging to 7 Order, 5 Kalssis was found in the South Marmara Sea.