This project was developed in response to MMS's recognition that offshore oil and gas platforms may serve as a harvestable source of organisms with pharmaceutical or other commercial applications. The first concern of this study, therefore, was, to identify the organisms that make up the biofouling or epifaunal communities on platforms. The second objective of this study was to preliminarily determine the potential of any of these organisms to be source of pharmaceuticals or any other commercially important products. Finally, the concentration and distribution of potentially important species on the structures and the variability of that distribution with platform location, and the density of organisms at various depths on the platform and seasonal variation of occurrence was considered.