Volcanic funnel, reef structure, and the main depth band.
The Blue Hole is a shore dive through a volcanic tunnel off Playa Chica.
The Blue Hole is a shore dive through a volcanic tunnel off Playa Chica.
The Blue Hole is a shore dive in Puerto del Carmen built around a volcanic funnel cut through the reef. The approach runs along the reef wall and over sandy shallows before the tunnel opens back into blue water, so the dive feels like a route rather than a single feature. It suits confident divers who want an overhead section, solid buoyancy control, and a plan for the return along the wall. Expect crevices, caves, and plenty of fish life around the opening.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
20m - 30m
Depth Note
The upper opening is around 20 m and the funnel drops to just below 30 m.
Best Season
Year-round, with calmer sea windows making the shore entry and tunnel more comfortable.
Typical Conditions
Usually clear and easy to read along the wall, but the tunnel feels less forgiving if swell builds or divers stir sediment.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Keep buoyancy tight in the tunnel, watch gas and no-deco limits, and treat the overhead section as a real penetration rather than a casual swim-through.
Community notes to help plan your visit.
Scuba Diving
Follow the reef wall to the volcanic funnel, then choose the outer edge or continue through the tunnel into blue water. The route rewards calm buoyancy, gas discipline, and comfort with overhead terrain.
Freediving
Only for highly experienced breath-hold divers; the main passage is deep and overhead, so it is not a casual freedive target.
Snorkeling
Snorkeling is better in the shallow Playa Chica area than at the tunnel itself; the main Blue Hole feature is too deep for casual snorkelers.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Volcanic funnel, reef structure, and the main depth band.
Shore-entry route, overhead caution, and marine-life detail.
Popularity signal, swimthrough shape, and reef-life detail.
Land route and a conservative visibility estimate around 20 m.
Independent route guidance and dock/boat caution.
Official tourism guide for Agujero Azul, year-round conditions, and local marine life.
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