 The fringing reefs around Mayreau and the Mayreau Gardens reef are considered to be the most biodiverse and healthy, with Horseshoe Reef and the reef around Petit Tabac being the next richest.Finally, the World’s End and Egg reef, as well as the other fringing reefs are considered to be the most degraded and least diverse in the park.The common corals on the reefs are Montastrea, Porites, Acropora, Millepora and Siderastrea species, as well as patches of soft corals such as Gorgonians (Sea Fans) and sponges.