The property consists of two separate areas: Sanganeb is an isolated, coral reef structure in the central Red Sea and the only atoll, 25 km off the shoreline of Sudan. The second component of the property is made up of Dungonab Bay and Mukkawar Island, situated 125 km north of Port Sudan. It includes a highly diverse system of coral reefs, mangroves, seagrass beds, beaches and islets. The site provides a habitat for populations of seabirds, marine mammals, fish, sharks, turtles and manta rays. Dungonab Bay also has a globally significant population of dugongs. 

Źródło: World Heritage Convention
http://whc.unesco.org/en/list/262