Of triangular shape, It ends by three headlands: Grosse Pointe in the east is an abrupt cliff which plunges into Dominica Passage, Basse Pointe in the north of the island overlooking la Redonde, in front of which is located a series of sharpened rocks called les Quilles and Pointe des Colibris on the west, forming with the eastern headland of la Coche, the dangerous passage called Passe des Dames.

[3] The island is frequented by sea turtles, which come to reproduce there, but it is the home of the seabirds: magnificent frigatebird (Fregata magnificens), brown booby, masked booby, terns, double-crested cormorant (Phalacrocorax auritus), pelican, petrels nest on the cliff of the island.

Since 1994,[4] the island is the property of Conservatoire du littoral and is placed under the protection of the agency even if the municipality of Terre-de-Haut and the National Forests Office of Guadeloupe stay the administrators.

[5] The xerophile forest of all the islands of the archipelago of les Saintes is also protected, in particular woodlands of Eugenia axillaris, an important species among the Lesser Antilles.

The place abounds in an incredible variety of sponges, gorgonians, corals and fishes of the Antilles, attracting the divers.