Simpson Bay Lagoon is a large, sheltered body of water located on the island of Saint Martin in the Caribbean. It is known for its calm waters, making it a popular spot for boating, sailing, and other water activities. The lagoon is surrounded by beautiful beaches and residential areas, providing a picturesque setting for both locals and visitors. The lagoon connects to the Caribbean Sea through a narrow channel, allowing for easy access to open water. It is also home to various marine life and offers opportunities for fishing and snorkeling. The area is a hub for yacht charters and is close to attractions like Maho Beach and Philipsburg.