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Miyako

Ichinose Hall (一の瀬ホール, Shimoji)

  • Max depth30 m
  • CertificationOpen water / no overhead
  • Water temperature≈ 20–29 °C, varies with the seasonestimated, no reports yet

The dive

Light falls into each of the halls, large and small.

Profile and sections

Light falls into each of the halls, large and small. It is a little-known site, but the owner of the dive centre calls it his number one: on the level of Miyako's three best-known sites (Toriike, Maō no Kyūden and Antonio Gaudí) or above, with an atmosphere he calls sacred.

Practical: the dive centre rates its difficulty at 60%.

Depth and profile
To 30 m: large and small halls.
Configuration
Halls with daylight: recreational gear with the guide (estimate).
Who can dive where
  • CaveAt least Open water / no overhead
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveGoes down to 30 m (trimix or deco may be needed) · doesn't decide who may dive
Entry or dive feeThrough a dive centre or guide

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

How to get there

Boat dive off Shimoji with a local dive centre. In bad seas the boat cannot moor, so the dive centre can only dive it ~30% of the time.

Plan your route ↗

Around Ichinose Hall (一の瀬ホール, Shimoji)

Going to Miyako with your team?

Marcel finds the sites that match your team's certifications.

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Something wrong, or do you know more?Depth, access, parking, the current situation: let us know.
Sources, sharing and disclaimer

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Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (Oct 2026): ja.wikipedia, showcaves.com, the dive centres' websites (BIGHOLIDAY, Sun Island, Aquatic Adventure), visitokinawajapan.com, nap-camp, skyticket, the prefectural Miyako hospital, Ryukyu Shimpo and DAN. Toriike pin from Wikipedia; the boat sites have none. These are guided boat dives into caverns, halls and arches; the requirements come from the dive centres. Certification and configurations are estimates.