p. 41 - 123 FAUNA ASSOCIATED WITH THE MAIN MACROPHYTE ALGAE FROM THE ROMANIAN BLACK SEA COAST Victoria Tiganus Romanian Marine Research Institute Constanta Abstract The qualitative and quantitative structure, monthly and multiyearly dynamic of the populations living in the Cystoseira and Phyllophora fields are presented. In the paper there also data on the biology, biometry and biological production of main species. Comparisons with rocky fauna and with the macrophytes fauna from other Black Sea zones (Ukrainian, Bulgarian) are made.