Sclerosponges grow on hard substrates in areas protected from high rates of sediment accumulation to depths of about 200 m at Discovery Bay, Jamaica. Here they are primary framework builders on the deep fore-reef between 70 m and 105 m.
Lang, Judith C., Willard D. Hartman, and Lynton S. Land. 1975. "Sclerosponges: Primary framework constructors on the Jamaican deep fore-reef." Journal of Marine Research 33, (2). https://elischolar.library.yale.edu/journal_of_marine_research/1319