The coastal waters of south-eastern Africa, i.e. from Mozambique to Tanzania, constitute the breeding sub-region C1 , the coastal waters of the northern Mozambique Channel Islands, the west coast of Madagascar and the southern Seychelles, the breeding sub-region C2 and the coastal waters of southern and esatern Madagascar, i.e. Antongil Bay and Sainte-Marie Island, the breeding sub-region C3