The beaches of Saint Martin, a bit of heaven on Earth The sheltered bays and secret coves are a succession of long sandy stretches. The rocky coasts and sandy shores unfurl as you're drawn to the gentle lapping of the crystal-clear sea.

Yes, St. Martin (and Sint Maarten) is famous for some of the clearest, most turquoise waters in the Caribbean. The clarity is particularly exceptional on the French side, at beaches like Orient Bay and the secluded Grand Case. However, for the absolute clearest "swimming pool" water, travelers head to Pinel Island or Tintamarre, where the lack of development and current keeps the visibility perfect for snorkeling. On the Dutch side, Mullet Bay is renowned for its crystalline water and white sand. The water clarity can occasionally be affected by "Sargassum" (seaweed) seasons, which typically occur in the spring and summer, or by heavy storms that stir up sand. In 2026, the local government has increased "Marine Reserve" protections to ensure the coral reefs remain healthy, which helps maintain the natural filtration and clarity of the coastal waters. For the best experience, visit during the dry season (December–April) when runoff is minimal and the sea is at its calmest and most transparent.