Off the southern tip of Ambergris Caye is Belize's oldest marine reserve
The Hol Chan Marine Reserve. Hol Chan is Mayan for ‘little channel” The entire reserve focuses on a cut through the reef (called a quebrada) which is little more than 25 yards (23 m) wide and 30 feet (9 m) deep about 4 miles southeast of San Pedro. The reserve was formed primarily as a community-based initiative due to concern over the high level of uncontrolled, often destructive fishing and diving activities in the area. Reserve status was also called for by international organizations such as the New York Zoological Society (NYZS) and Peace Corps, due to the unique formation of the channel, the abundant fishery resources (including conch and lobster) and the feasibility of including an interlinked system of coral reef, sea grass and mangrove habitats in this area.
The Hol Chan Marine Reserve and Shark Ray Alley are the most popular diving/snorkeling sites in all of Belize. This is due to the close proximity of San Pedro, the large amount of fish life found with the Hol Chan “cut” accessible by snorkelers and beginning divers, the diversity of marine life encountered throughout the 4 zones of the park and the excitement and novelty of swimming with large numbers of nurse sharks and sting rays.