Quantitative studies on the corals of Holocene fringing, pinnacle and knoll coral-algal reefs of Castle Harbour, Bermuda, show that only about 10% of the available reef substrate is coralcovered. Of this, about 70% of the total coral-covered area is occupied by corals belonging to the Madracis-Oculina assemblage....
Dryer, Stephen, and Alan Logan. 1978. "Holocene reefs and sediments of Castle Harbour, Bermuda." Journal of Marine Research 36, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1436