This is a beautiful stamp souvenir sheet, issued by Togo in 2011, displaying the vulneraility of corals in the ecosystem and ships. Featured on the sheet shown include the Brown Tube Sponge, Montil Cap Cup Montipora, Pillar Coral, Danube Crayfish, and the Staghorn Coral, among others. The sheet is Post Office fresh, mint never hinged, and F/VF.