The late Jacques Cousteau and a filming crew explored the underwater cave whose roof collapsed about 10,000 years ago. (Tony Rath / Tony Rath Photography)
Diving in the great Blue Hole requires advanced skills. Divers descend to about 135 feet to explore the exotic wildlife and underwater features. (Tony Rath / Tony Rath Photography)
A diver with elkhorn coral in the Belize Barrier Reef Reserve System. (Tony Rath / Tony Rath Photography)
Sea turtles ply the waters of the barrier reef, a series of coral reefs off Belize. (Tony Rath / Tony Rath Photography)
