Tobago Cays Marine Park is a 1,400-acre protected area in the Southern Grenadines, Saint Vincent and the Grenadines. The park has been established to protect the unique environment of a sand-bottom lagoon that includes the five Tobago Cays, the uninhabited island of Mayreau, and the four-kilometers long Horseshoe Reef. Horseshoe Reef is a major bank-barrier reef and one of the healthiest and the most biodiverse in the country. The reefs are home to a large number of coral fish species with the occasional barracuda and jacks. The islands are covered with dry tropical forests and beach vegetation with coconut, cactus, agave, coccoloba, and diospyros as well as one small patch of Red Mangroves on Petit Rameau. The park is a popular tourist destination with divers, snorkelers, and sun-worshipers.

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