Diver-only entry and no snorkeling or trial diving.
Snake Hole is a cave dive with an air dome and wave fog.
Snake Hole is a cave dive with an air dome and wave fog.
Boat access, diver-only entry, and the cave layout make a local Miyako operator the practical way in.
Snake Hole is a shallow Irabu cave dive with an air dome and a wave-sensitive interior. Certified divers enter through a submerged opening and move up into a chamber where outside wave pressure can make the dome fog up. The appeal is the topography and light, not big-school action, and the site is best when the sea is calm. It is a guided cave dive rather than a casual snorkel stop.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
5m - 23m
Depth Note
The entrance is shallow at about 5 m, with broader site descriptions placing the dive profile around 7 to 23 m overall.
Best Season
Spring to autumn, especially May to September on the Irabu side.
Typical Conditions
Southern winds make Irabu more favorable; Snake Hole is calmer and safer then, though wave action still changes the dome’s pressure.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
The air dome and wave-driven pressure shifts make buoyancy control and a conservative pace important.
Access Restrictions
The entrance is submerged and the cave is overhead, so snorkeling and trial diving are not appropriate.
Legal Notes
Operator guidance treats this as a diver-only cave, so certification and local guide rules apply.
Community notes to help plan your visit.
Scuba Diving
Shallow cave entry into an air dome with strong light contrast and a short ascent toward the surface opening.
Freediving
Not suitable for freediving because the entrance is submerged and the cave is overhead.
Snorkeling
Not a snorkel site. The interesting part sits inside the closed cave beyond the submerged entrance.
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
Diver-only entry and no snorkeling or trial diving.
Air dome, wave fogging, and fish list for Snake Hole.
May-to-September Irabu seasonality and calmer conditions.
Boat-trip logistics and seasonal Irabu wind pattern.
Official Irabu diving destination context and local operator setup.
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