The Grand Cul-de-Sac Marine is a bay of Guadeloupe, located between the north coast of Basse-Terre and the west coast of Grande-Terre. It is closed off by coral reefs.
Its area is approximately 15,000 hectares.
The Grand Cul-de-Sac Marine is classified as a Marine Nature Reserve on November 23, 1987. Act No. 2006-436 of April 14, 2006 integrates the islets of Grand Cul-de-sack in the heart of National Park. The reserve is decommissioned in 20092. The Guadeloupe National Park has since been in charge of the management.
The bay encompassing the islets is defined in the adjacent Sea Area. Covering an area of 15,000 hectares, it brings together the islands of Basse-Terre and Grande-Terre. It is bordered by mangroves, swamp forests and herbaceous marshes on more than 5,000 hectares whose ecological functions are very important.
Not observed in Guadeloupe since the beginning of the twentieth century after having been the victim of a large hunt, the manatee is reintroduced in 2016 in the Grand Cul-de-sac marin. Two males (Kaï and Junior) from Singapore are settled in a basin in Blachon, in the municipality of Lamentin. Junior dies on October 02, 2016 as a result of kidney failure. In the long term, ten females and five males should be able to ensure the reproduction, before a hundred animals can be released, but the manatees born in captivity prove not adapted to this reintroduction, the project is redesigned in November 2017 with animals born in a semi-natural environment. Contacts are made in 2018 with Mexico for the supply of two males and two females.
On December 8, 1993, Grand Cul-de-Sac was designated a Ramsar site for the importance and fragility of its habitats, whose coastal areas are threatened by the urban development of the Pointe-à-Pitre agglomeration. Abymes and Baie-Mahault.