“…The aragonite skeleton of the polyps increases habitat complexity both at and above the seafloor (Rogers, 1999). Dead coral polyps provide hard substrate for sessile filter-feeding organisms (López Correa et al, 2004), with the complexity of the reef morphology providing refuge for mobile organisms such as fish (Husebø et al, 2002;Costello et al, 2005;Ross and Quattrini, 2007;Ballion et al, 2012;D'Onghia et al, 2012), shrimp and other crustaceans (Reed et al, 1982;Mortensen et al, 1995;Krieger and Wing., 2002; Roberts et al, 2008;Le Guilloux et al, 2010;D'Onghia et al, 2012). Local hydrodynamic flow may be influenced by coral structure, enhancing or reducing local depositional rates across a reef, or entrapping suspended material in turbidity loops above the reef structure (Mortensen et al, 1995White, 2007;Wagner et al, 2011).…”