travel-brochures.okinawastory.jp · Tourism Brochure
Official Okinawa dive brochure listing Hidenchigama among regional dive sites.
Dive Spot Guide•
Hidenchigama
Offshore limestone cave for technical cave divers.
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Offshore Kume Island limestone cave with a tiny entrance, technical penetration, and fish life outside the opening.
About Hidenchigama
Hidenchigama is an offshore limestone cave system on Kume Island with a tiny entrance at a deep drop-off and a full-penetration interior that is only appropriate for technical cave divers. Inside, the cave has chandelier-like and curtain-like limestone formations, while the open water outside the entrance is where fish schools and small crustaceans are more likely to show. The site rewards careful gas planning, line discipline, and overhead-environment skills.
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Research Estimate At Hidenchigama
Conservative baseline from public research. No community dives logged yet.
AccessDifficult access
CoralHeavily damaged
Aquatic LifeAverage variety
FacilitiesNo facilities
Crowd / PopularityVery quiet
CurrentNo current
SurgeFlat calm
Where Is Hidenchigama?
This spotNearby spots
Community sourced coordinates.
Hidenchigama Planning Details
Depth range, seasonality, and planning context.
Reported Depth
35m - 40m
Depth Note
The entrance is at a 35 m drop-off offshore from Torijima fishing port, and technical reports place the cave interior around 37-40 m maximum depth.
Best Season
Year-round for qualified teams, but only when sea and logistics are suitable.
Typical Conditions
Deep offshore limestone cave with a tiny opening, full-penetration interior, and fish schools outside the entrance.
Safety & Access At Hidenchigama
Hazards, restrictions, and access requirements.
Key Hazards
Overhead environmentRestricted access
Safety Notes
Treat the site as a full penetration cave dive with appropriate training, gas planning, and line discipline.
Access Restrictions
Dive only with qualified cave or technical support; the opening is too small for casual entry.
Legal Notes
Follow local cave-site access and penetration rules and do not enter without the right training and support.
Local Intel For Hidenchigama
Community notes to help plan your visit.
Scuba Diving
The site is a full technical cave penetration with a very tight entrance and overhead rules throughout.
Freediving
Not suitable for freediving; the cave opening and depth demand scuba and technical procedures.
Snorkeling
Not a snorkel site; the entrance is too deep and too small for surface use.
Hidenchigama Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Hidenchigama.
Current Snapshot
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🌥️Variable
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Sea State
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Visibility Outlook
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Exposure Profile at Hidenchigama
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Hidenchigama
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Hidenchigama
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Hidenchigama
Average conditions based on logged dives & visits.
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Hidenchigama Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Hidenchigama Guide - Sources and Updates
Last Updated
Research Sources
www.namiyoi.com · Technical Dive Report
Technical cave report with depth measurements, formations, and cave-life notes.
www.youtube.com · Operator Technical Video
Technical-diving video that identifies Hidenchigama as a cave-dive site.
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