 The least vulnerable sectors of the reef are in St Paul and l’Etang-Salé (in the north), due to the absence of a reef ecosystem and the stability of the shoreline.Due to pressures from the nearby urban areas, the sector in Grande Anse and Boucan Canot is moderately vulnerable, but there are few severe impacts.The highly vulnerable points are located at la Pointe des Aigrettes, la Pointe au Sel, la Ravine Blanche, St-Pierre and Grand Bois (in the south).