Dean’s Blue Hole

Verified2026-10-05 checkedCavernWall

Two hundred and two metres straight down, ten strides from a beach — the most famous freediving site there is.

Depth: 0–50 m0–164 ft
Difficulty: Intermediate
Entry: Shore
Typical current: None
Coordinates: 23°6.936′N 74°58.602′W
Activities: Freediving · Snorkelling · Scuba

Dean's Blue Hole is a sinkhole in a bay on Long Island: you walk off the sand into waist-deep water, take ten strides, and the bottom is 202 m below you. There is no current, no boat, no swell inside the bay, and the wall is vertical from the surface — which is why Vertical Blue has been held here since 2008 and why most of the world's depth records were set in it. A line is almost always rigged in competition season. For everyone else it is a shore dive anybody can swim out to, with the sobering property that the water under your fins goes further down than any of them can.

Drive to Turtle Cove on Long Island, Bahamas — an hour from Deadman’s Cay airport. Walk in off the beach.

Best season

ExcellentApr–Jun
GoodJul–Mar

Before you get in

A cavern — inside the daylight zone, but still with a ceiling, and with stretches where you cannot simply go up.
Deeper than recreational limits. It carries a decompression obligation and gas planning, and is not a dive to plan without that training.
A wall. There is no bottom in sight to judge against, so depth is kept by the gauge alone — and it is easy to end up deeper than intended.

Taken from this site’s recorded depth, type and current, and nothing else. An empty list is not a safe site — the sea on the day, the local geography and the boat traffic are not in it. The briefing on the spot comes first.

Conditions

Water temperature: 29.9°C86°F
Wave height: 0.3 m1 ft
Air temperature: 31.8°C89°F
Wind speed: 11.5 km/h7.1 mph

Updated 2026-10-07 16:15 UTC · Source: Open-Meteo

Weather data by Open-Meteo.com (CC BY 4.0)

Conditions are reported for information only. Assess the site yourself and follow your guide and your training.

No live conditions for this site yet.

We only show numbers we can attribute to a source.

Sea state and tide

On a date

Tide · 10/7

Low11:370.06 m
High17:520.80 m

Forecast heights against mean sea level. Real tides in a bay, a harbour or over a flat can differ — check an official tide table before you get in.

Pick a day to see its tide

Only wave height and wind are scored, because those are what close a boat ramp or a shore entry. Water temperature is reported and never scored: 12°C is an ordinary dive in a drysuit and punishing in a 3 mm, and a number that cannot see your suit has no business marking it down. Stars do not decide whether you get in — you and your guide do, on the day.

Weather data by Open-Meteo.com (CC BY 4.0)

Marine life you may see

Green turtleChelonia mydasSeasonal
Nurse sharkGinglymostoma cirratumSeasonal
Southern stingrayHypanus americanusCommon
Caribbean spiny lobsterPanulirus argusSeasonal
Giant barrel spongeXestospongia mutaRare

From divers

What people who were in the water reported. Not a forecast, and not a judgement about whether the site is safe to dive.

No recent reports from divers. If you dived here in the last two weeks, you can say how it was.

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