185-Mile National Monument

Belize Barrier Reef

The Belize Barrier Reef sits just miles off the coast of Belize and is part of the larger Mesoamerican Barrier Reef, second in size only to the Great Barrier Reef in Australia. Home to hundreds of species of coral and fish, it is a hot spot for divers, snorkelers and biologists from all over the world.

For 185 miles, explore all that the reef has to offer, including swimming with whale sharks near the Placencia coast, diving deep into the Great Blue Hole and snorkeling off more than 400 white sandy islands that surround the reef.


Listed as a World Heritage Site by UNESCO, the Belize Barrier Reef provides a crucial balance within the surrounding marine system. Help us preserve this reef when you visit by wearing reef-safe sunscreen, avoiding contact with the coral, and picking up trash and recyclables on the beach.

Belize Barrier Reef
500 Species of Fish Found On The Reef
Snorkeler