Beach and camp listing used for swell and facility context.
Okubo Hama is Miyakejima's main lava-root beach dive.
Okubo Hama is Miyakejima's main lava-root beach dive.
Okubo Hama is Miyakejima's main shore dive, reached from a black-gravel beach on the island's north side. The lava-root terrain spreads east and west from the entry, so the site works best one sector at a time rather than as a full circuit. Shallow water above the roots holds coral pockets and dense fish life, while the overhang gives macro subjects a sheltered nook. It is at its best on settled days, when the bay stays calm and the entry is easier.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Depth Note
Shallow entry leads into broader lava-root terrain, with the dive area extending east and west beyond a single pass.
Typical Conditions
Sheltered bay conditions with a long black-gravel frontage and lava-root terrain; calm windows are the easiest windows.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
A large overhang is present; maintain appropriate clearance and buoyancy around the overhead feature.
Legal Notes
Stay within Miyakejima's designated diving areas and avoid restricted zones.
Community notes to help plan your visit.
Scuba Diving
The dive runs over lava roots that spread east and west, so most sessions work best as one focused sector rather than trying to cover the whole site.
Snorkeling
The shallow frontage can work for calm-day snorkeling and slow fish watching near the beach, but the entry still needs care.
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
Beach and camp listing used for swell and facility context.
Directory overview of Miyakejima dive sites and conditions.
Local operator page for the north-side site and fish life.
Island diving rules and designated-area guidance.
Know this site? Improve Spot Details.

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