Turneffe Atoll is a large coral atoll located off the coast of Belize in the Caribbean Sea. It is part of the Belize Barrier Reef, which is the second-largest coral reef system in the world. The atoll is known for its diverse marine life, including various species of fish, sea turtles, and coral formations, making it a popular destination for snorkeling and diving. The atoll covers approximately 30 square miles and consists of numerous small islands and cays. It is home to several protected areas, including the Turneffe Atoll Marine Reserve, which helps conserve its unique ecosystems. The atoll's rich biodiversity and stunning underwater landscapes attract both researchers and eco-tourists alike.