243-247The most dominant species that has successful settlement on the panel system was observed to be Amphibalanus amphitrite. Adults were cultured in the laboratory for releasing nauplii and were reared under laboratory conditions and used in settlement assay. The results of this study indicated that the Barnacle Amphibalanus amphitrite is the most common biofouling organism present on all the three types of materials used in the experiment, in the coastal region of Visakhapatnam harbor