The navigation buoys moored at depths of 2 to 52 meters off the Qiongzhou Channel and Leizhou Peninsula coastal waters, Guangdong province, for 9 to 36 months were examined for biofouling (including species, percent coverage of surface, thickness, and wet weight) in 1967-1969. The results indicated that biofouling of buoys in these waters were generally more severe than those in the East China Sea. There are evident differences on the biofouling of buoys situated in various environments.According to the dis...