During the Cuba’s Twilight Zone Reefs and Their Regional Connectivity expedition, remotely operated vehicle dive sites in the upper mesophotic zone (depths ranging from 30-40 meters or 98-131 feet) and extending to over 100 meters (328 feet) ranged from eroded rock walls to well-developed fore reef areas with significant hard coral cover. Observed hard coral communities were dominated by lettuce corals (Agaricia spp.) and generally restricted to the 40 to 70-meter (131 to 230-foot) depth zones across the northern sites.

From: Cuba’s North East Coastline: Diversity on a Grand Scale.