Dive-directory listing showing boat entry and site classification.
Japan · Ishigaki and Iriomote
Osaki Minokasago Kyuden is a boat-access macro site with sand slope and reef.
Osaki Minokasago Kyuden is a boat-access macro site with sand slope and reef.
Use a guided Ishigaki boat operator; this is not a shore-entry site.
Osaki Minokasago Kyuden is a boat-access macro site on Ishigaki where a sandy slope and scattered reef structure pull in dense fish life. The deeper outer section is known for lionfish, leaf scorpionfish, garden eels, gobies, ribbon eels, and other small subjects, while the shallower edge holds anthias and schooling fish. Plan for a guided boat dive that rewards calm weather, steady buoyancy, and unhurried time over the sand and structure.
Site Conditions
Safety Notes
Keep buoyancy tight over the sandy slope and give the deeper outer section extra respect if your gas or trim is poor. Make controlled ascents and stay aware of boat traffic on the surface.
Access Restrictions
Boat access only; no practical shore entry.
Legal Notes
Standard local dive-boat and marine-area rules apply.
Community notes to help plan your visit.
Scuba Diving
Depth range is described as roughly 5–30 m, with sandy-bottom habitats and root-like structures providing varied marine life encounters.
Freediving
Not a primary freedive target; the boat access and deeper outer section suit scuba better.
Snorkeling
Not the main use case; the site is better as a scuba dive than a snorkel stop.
Species commonly reported at this site, with direct links into their wildlife guides.
Conservative baseline from public research. No community dives logged yet.
Last Updated
Research Sources
Dive-directory listing showing boat entry and site classification.
Osaki-area macro guide and winter-focused site overview.
Visibility day log plus leaf scorpionfish, ribbon-eel juvenile, damselfish, and shrimp.
Broad Ishigaki diving context and winter rough-water caution.
Long-running Osaki site guide with advanced-dive framing and fish list.

Osaki Hanagoi Reef is Ishigaki's easy boat reef with clear water.


Under The Okganzaki Lighthouse is a boat dive with maze-like lava terrain.