Parasabella fullo is a tube-dwelling sabellid polychaete. Sabellids live in a tube composed of sand and detritus embedded in secretions. Parasabella fullo's head bears palps modified into 12-26 pairs of feather-like bristles (radioles) arranged into two semicircles. The radioles are used for suspension-feeding, collecting phytoplankton and detritus and transporting food particles to the mouth. This polychaete is native to the northwest Pacific, including the coast of Russia and the Sea of Japan. In 2011-2014. it was found on the hulls of recreational boats in Santa Barbara. Harbor and San Diego Bay, and on fouling plates in Monterey Harbor, and many sites from Santa Barbara to San Diego Bay. No impacts have been reported, for P. fullo, but some sabellids have had important impacts as fouling organisms in harbors and on boats.