Divers explore Blue Hole Spring in Florida

Incredible underwater cave caught on film

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Two divers exploring a the Blue Hole Spring in an underwater cave in Florida.

The footage shows the men swimming inside the cave and surfacing through the crystal clear water.

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''The spring produces crystal-clear water from the bottom of a 36-foot hole,'' the filmer later wrote online.

''Sun rays beam in from above through the blue water and strike the white sand bottom,'' he added.

Underwater Photography Photo Contest winners

Underwater Photography Photo Contest winners