Sanbondake
About Sanbondake
Sanbondake, also known as Onohara Island, is an uninhabited reef off the coast of Miyakejima reached by about a one-hour boat ride. It’s described as one of the most dynamic dive points in the area, known for big pelagic encounters and large schools of fish. The site is a drift dive and is considered for advanced divers only, with dives possible only when sea conditions and currents are suitable.
Where Is Sanbondake?
Sanbondake Planning Details
Depth range, seasonality, and planning context.
Typical Conditions
Strong current; drift-style diving. Conditions must align for the site to be divable.
Safety & Access At Sanbondake
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Advanced-only drift dive with strong current; diving is only feasible when sea conditions and currents are favorable. Large sharks may be present, so plan and dive within training and local procedures.
Access Restrictions
Only possible to dive when sea conditions and currents are right.
Local Intel For Sanbondake
Community notes to help plan your visit.
Scuba
A full drift dive in strong current intended for advanced divers.
Sanbondake Dive Conditions Planner
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Exposure Profile at Sanbondake
Directional shelter context for incoming swell.
Recent Logged Visits At Sanbondake
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Sanbondake
Average conditions based on logged dives & visits.
Sanbondake Guide - Sources and Updates
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