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Popular cavern framing and overhead air-pocket access.
Dive Spot Guide•
Cathedral Cave
Boat-access ocean cave near Sagres with air chambers and marine life.
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Cathedral Cave is a Sagres boat dive with a circular cavern, two air chambers, and coral-covered rock walls that host fish and invertebrates.
About Cathedral Cave
Cathedral Cave is a boat-access ocean cave off Sagres with a mooring, a broad entrance, and a circular cavern that opens into two air chambers. The main chamber is a recreational cavern dive, while deeper penetration is for cave-certified divers. Corals, nudibranchs, fish, eels, crabs, and lobsters make the site busy and photogenic on calmer days.
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Research Estimate At Cathedral Cave
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 10m
AccessSimple entry
CoralHealthy coral
Aquatic LifeExceptional variety
FacilitiesGood facilities
Crowd / PopularityQuite busy
CurrentNo current
SurgeLight surge
Where Is Cathedral Cave?
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Community sourced coordinates.
Cathedral Cave Planning Details
Depth range, seasonality, and planning context.
Reported Depth
15m - 24m
Depth Note
Operator sources put the site around 15-24 m, with the entrance in the mid-teens and the deeper interior reserved for cave-certified diving.
Best Season
April-October
Typical Conditions
Ocean-cave conditions with cool water, good visibility on cleaner days, and a site that rewards patience and control.
Safety & Access At Cathedral Cave
Hazards, restrictions, and access requirements.
Key Hazards
Overhead environmentSurge
Safety Notes
Check swell at the mouth, keep your entry controlled, and do not push into the inner cave without cave certification.
Access Restrictions
Boat access from Sagres harbour. Deeper penetration beyond the main cavern requires cave certification.
Legal Notes
Follow operator briefing and stay within recreational cave limits unless properly cave certified.
Local Intel For Cathedral Cave
Community notes to help plan your visit.
Scuba Diving
Starts at about 15 m and gets shallower inside; the cavern is circular with two internal air chambers.
Freediving
The open chamber can suit trained freedivers on calm days, but the cave structure makes scuba the safer default.
Snorkeling
Not a snorkel-first site; the main draw is the submerged cavern and its light-filled interior.
Recent Logged Visits At Cathedral Cave
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Cathedral Cave
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility10m
Activity
No dive activity logged yet.
