Long Island · about 3 km from Clarence Town

Dean's Blue Hole

Max depth203 m (666 ft)
CertificationCavern
SpecialExperienced divers

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Now at Dean's Blue Hole

Status: Open
Visibility: No reports yet
Water temperature: Not known yet.
Rain, next 3 days: 5 Thu2.3 mm26°/28°6 Fri0.2 mm27°/28°7 Sat0 mm27°/28°

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How was the visibility in the cave? Report it

poor visibility5–10 m (16–33 ft)good visibility

Date of your diveSign in to report the visibility

This is about the visibility inside the cave, not in the head pool or the open water at the entrance.

TemperatureDate of your diveSign in to report the temperature

Report what your dive computer showed in the cave. Only the number of reports, the temperatures and the latest date are public.

Source: MET Norway (CC BY 4.0). Updated daily. Storms: NOAA National Hurricane Center (public domain).

The dive

From the beach you swim to a hole in the bay that is ~30 m across at the surface. Deeper it opens into a cavern at least 100 m across.

Very deep (202–203 m) with a cavern below: stay within your certification and gas plan; deeper is technical diving.

Source: TheTravel – Can you dive Dean's Blue Hole? ↗Source: Wikipedia – Dean's Blue Hole ↗

Profile and sections

From the beach you swim to a hole in the bay that is ~30 m across at the surface. Deeper it opens into a cavern at least 100 m across. Corals and reef fish live on the rim, with small life such as seahorses and shrimp, and a school of tarpon hangs at ~20 m.

At 202 m (Vertical Blue: 203 m) it is one of the deepest blue holes in the world. It is famous as a freediving site: many world records were set here, among them at Vertical Blue.

Practical: scuba is allowed, but every operator sets its own requirements and beyond the upper parts it is technical diving.

Source: Wikipedia – Dean's Blue Hole ↗Source: Vertical Blue – Dean's Blue Hole ↗Source: TheTravel – Can you dive Dean's Blue Hole? ↗

Depth and profile: ~30 m across at the surface (Vertical Blue: 45 × 55 m, then 25 × 35 m) · below it a cavern ~100 m across · 202–203 m deep
Configuration: Deep dives here count as technical diving: going deeper means trimix and a technical certification.

Who can dive where

CaveAt least Cavern
Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
Whole caveGoes down to 203 m (trimix or deco may be needed) · doesn't decide who may dive
Whole caveExperienced divers only · doesn't decide who may dive

Experienced divers

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

Source: Wikipedia – Dean's Blue Hole ↗Source: Vertical Blue – Dean's Blue Hole ↗Source: TheTravel – Can you dive Dean's Blue Hole? ↗

How to get there

In a bay west of Clarence Town: you walk in from the beach (or come by boat). Every dive operator sets its own requirements.

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Around Dean's Blue Hole

FillsNo fill station known nearby

Where to sleepAround Clarence Town on Booking.com ↗

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