Abstract: Wooden panels were exposed under the rafts at 6 sites of Dongshan bay,Fukien province (Fig.1) for monthly,quarterly,and yearly intervals,1961-1965.The major species are listed in Table 2,the percent coverage of surface and the wet weights per unit time are given in Tahles 3,4 and the seasons of attachment are illustrated in Fig.2.There existed a very great difference in both composition and biomass between the fouling community of Dapingyu (in the mouth of bay with more rapid current and stronger wave action prevailing at this time of the year) and that of the other 5 sites(the various sheltered coastal waters).The result showed that the current was the most important factor that influenced the attachment and growth of fouling organisms.In other words the rapid current favours the attachment and growth of fouling organisms.