The coral and other sea creatures add to the excitement ... It highlights the complex relationships within the Belize sinkhole phenomenon. The Great Blue Hole is a top attraction in Belize ...

Narrator: There's a massive underwater sinkhole off the coast of Belize that extends 125 meters into the Earth's crust. It's called the Great Blue Hole. Scuba divers and snorkelers have been ...

Declared a UNESCO World Heritage Site in 1996 – along with six other areas surrounding Belize's barrier reef – the Great Blue Hole remains ... many underwater creatures (expect the occasional ...