Natural Reserve of Saint Bartholomew aims to protect the natural environment of the island and maintains biodiversity. You will find informations about the marine flora and fauna of the island. It would be difficult to list all the species present.

Marine species

Species present in the Marine Park of Saint Bartholomew are typical of those encountered in the Caribbean. According to current knowledge, there is not endemic marine species (that we would not find anywhere else).

Marine fauna

Fish.183 species have bee found in the Marine Park, thanks to scientifics studies. Studies also noted a sizable increase in the fish population since 1996 in protected aeras. In the Marine Park, there are fishes you could find somewhere else in the Caraibe, as French angelfish (Pomacanthus paru), but also rarer species elsewhere, Nassau grouper (Epinephelus striatus) for instance. This fish is increasing in the Marine Park. There may have eagle rays (Aeteobatus narinari), and long-nosed seahorse (Hippocampus reidi) have recently been observed.
Learn more about the monitoring.


Marine turtles. Marine turtles are marines reptiles. Most common marine turtles in the Saint Bartholomew’s waters are :
Green turtle (Chelonia mydas) Endangered, it is protected, like all sea turtles. The young green turtle tends to be carnivorous, then herbivorous when she becomes an adult. It grazes the grass, which gives it its name.
Hawksbill turtle (Eretrochelys imbricata) is smallest than green turtle, it is also find in Saint Batholomew's waters.
Leatherbacks sea turtles (Dermochelys coriaceamay) spend near Saint-Barthélemy, three clutches have been observed in recent years.
Learn more about tracking.


Marine mammals: 33 species inhabit or frequent the Caribbean, some are found in the waters of St. Barts.
The humpback whale (Megaptera novaeangliae) is present near Saint-Barthélemy from February to May, where it reproduces and calves.
The bottlenose dolphin (Tursiops truncatus) a group of some individuals seems to lie in the east of Saint-Barthélemy. They are occasionally present in the Marine Reserve, near Turtle, Frigate, Toc Vers.
Learn more about the monitoring.


Coral. Saint Barthelomew is among the richest sites in the French West Indies, with 51 special of coral. Corals are associations of small tiny organisms that secrete a calcareous skeleton. Overall, the corals form coral reefs refuge and place of supply of a variety of animals: sponges, gorgonians, sea urchins, molluscs, crustaceans, fish ...
Learn more about the monitoring.


Seabirds. 14 species of seabirds nest in Saint Bartholomew. Only three species feed in the offing, all the other benefits reserve areas.
The Bridled Tern (Sterna anaethetus), the Sooty Tern (Sterna fuscata) and Brown Noddy (Anous stolidus) go on Fregate and Toc-Vers during their breeding season.


Molluscs: 200 species around the island, including the famous Queen conch, or Lambi (Globatus giga).

Crustaceans: 13 known species, including the spiny or rock lobster (Panulirus argus).

Sponges are present, with 60 species indentified.

Jellyfish : 27 species of jellyfish have been observed in the Marine Park. 

Marine flora

Recent studies conducted by the Nature Reserve have identified over fifty different algae and 5 species of seagrasses.
Theses seagrasses are not algae, but flowering plants! They are mainly found in sheltered bays, such as Marigot or Colombier where you could find two species of seagrasses :
Tortle grass (Thalassia testudinum). Recognizable by its large leaves flattened ribbon-like. There are a lot of small organizations on its leaves, food source for many animals. These meadows are the habitat of Lambis, sea urchins, sea stars, and green turtles. Green Turte feed this grass, that’s why it is called tortl grass. 
Manatee Grass (Syringodium filiforme). It is common in Saint-Barthélemy, where it grows up to 30m deep. Its leaves are thin and cylindrical.

Terrestrial species

Mammals. Some species of terrestrial mammals, bats, exist in Saint Barthelemy, 8 of the 15 found in the French Antilles. At dusk we could see a the Lesser Antillean ardrops (Ardrops nichollsi) or Natalus stramineus. Some bats form colonies and regroup in the caves of the cliffs, as molossian common (Molossus molossus) somewhere in Colombier.

Birds. In the ponds of Saint Bartholomew swim ducks and coots. On its banks frolic herons and egrets. Waders frequent wetlands. Small hummingbirds foraging flowers, as the Antillean crested hummingbird (Orthorhyncus cristatus).
The Bananaquit (Coereba flaveola) is present in all the Caribbean, with various subspecies. The Zenaida Dove (Zenaida aurita) comes to town, it is present throughout the Caribbean.

Reptiles. Red-footed tortoises (Chelonoidis carbonaria) is common in Saint Bartholomew. It seems that they were introduced by Native Americans until now.
Anolis (Anolis sp.) are only present in the New World (with 400 species). They are easy to see in Saint-Barthélemy in plants and on the walls.
A community in the Lesser Antillean iguana (Iguana delicatissima) is located in Saint-Barthélemy. As in the rest of the Caribbean, it is threatened by the presence of the common iguana (Iguana iguana) with whom he is competing for territory, food and females. Learn more about the monitoring of iguanas.
The ameivas are terrestrial lizards. One of the three ancient species found in the Caribbean is located in Saint Bartolomew and Sin Martiin only : Anguilla Bank Ameiva (Ameiva Plei).
The couresses snakes are harmless. The couresse of Anguilla (Alsophis rijgersmaei) is known in Saint Bartholomew. Considered as a vulnerable animal, it certainely disappeared of Saint-Martin.

Amphibians. Frogs occur singing every night or during rainy day. The Martinique robber frog (Eleutherodactylus martinicensis) despite its name, is presents in the trees of Saint Bartholomew.

Invertebrates. There are a few scorpions in Saint-Bartholomew, the little scorpion of Saint Bartholomew (Oiclus questeli), spiders and ants, some are considered somewhat aggressive, but beware especially centipedes. There are also beautiful butterflies and dragonflies.
Snails go out by wet weather, as the impressive giant land snail (Achatina fulica).
Crabs sneak into their hole in your way, they are on coastlines, beaches or near mangroves.