Turneffe Atoll is a group of small islands off the coast of Belize. It is approximately 30 miles long and 10 miles wide, making it the largest coral atoll in the Mesoamerican Barrier Reef System. The atoll was officially declared a marine reserve on November 22, 2012 because it is home to many important marine species. The land and seascape consists of a network of flats, creeks, and lagoons dotted by more than 150 mangrove islands. Large expanses of intact mangroves, seagrass habitats, and shallows provide important nursery functions for a wide array of fish species, crocodiles, lobster, conch and other invertebrates. It is home to more than 500 species of fish, 65 species of stony corals, sea turtles, manatees, dolphins, seabirds, and other wildlife. Turneffe Atoll is about a 30-minute boat ride from St. George’s Caye and offers some of the best wall dives in Belize.