The reefs provide a link between benthic and pelagic environments, play an important role in carbon and nitrogen processing (Chu and Leys, 2010), and act as a silica sink (Whitney et al., 2005, Chu et al., 2011 and Treguer and De La Rocha, 2013). While a full understanding of the ecological role of the reefs is yet to be realized, diverse communities of invertebrates and fish, including those of economic importance, were documented in association with the reefs