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Blue hole
Dean's Blue Hole
Long Island, Bahamas
The world's second-deepest marine blue hole, right next to a sandy beach. It is the home of world freediving records.
40 m
202 mRecreational limitBathymetry and profile
A sandy shelf 4 m deep drops suddenly into a shaft 25-35 m wide. The shaft opens into a large chamber below 20 m and reaches 202 m.
Dashed line: 40 m recreational diving limit
Features
- Home of the Vertical Blue freediving competition
- Sheltered by limestone cliffs
- Calm and very clear water
Specific fauna
- Juvenile reef fish
- Sea turtles
- Rays on the sand flats