Off the coast in the Caribbean Sea lie about 450 small islands, many sparsely populated or completely deserted. The largest island, Ambergris Caye, is 25 miles long and has long served as a hub for Belizes ecotourism industry: Some of the countrys best marine wildlife sightings are at the adjacent Hol Chan Marine Reserve, and the Great Blue Hole at Lighthouse Reef (a pleasant three-hour boat ride away). CariBean Tour Belize organizes plenty of wildlife-focused tours along the island.
The second-most developed island off the coast is Caye Caulker, a limestone coral island just 20 miles from Belize City. Farther south lie the Snake Cayes, a chain of tiny, deserted islands that are home to boa constrictors, coconut trees and gigantic hermit crabs.