A typical invertebrate grouping found on the interior roof of the pipes
consisting primarily of bryozoa, tunicates and sponges over the top of oyster
shells. Oysters could not survive long once the other fouling organisms
covered them over.
Image ID: reef0170, NOAA's Coral Kingdom Collection Location: Pokai Bay, Oahu Photo Date: January 1968 Photographer: Dr. James P. McVey, NOAA Sea Grant Program
