Yonaguni Monument/ Underwater Ruins
About Yonaguni Monument/ Underwater Ruins
The Yonaguni Monument is a submerged rock formation off the coast of Yonaguni in Japan’s Ryukyu Islands. It features large stone-like structures about 50 m long and 20 m wide, and is often discussed for its archaeological significance. Depths reach around 25 m, and divers may encounter a variety of marine life around the formation.
Where Is Yonaguni Monument/ Underwater Ruins?
Yonaguni Monument/ Underwater Ruins Planning Details
Depth range, seasonality, and planning context.
Reported Depth
Up to 25m
Depth Note
Depths reach around 25 m.
Local Intel For Yonaguni Monument/ Underwater Ruins
Community notes to help plan your visit.
On-the-ground
Notes currently available for this spot.
Aquatic Life
Divers may encounter various marine life around the site.
Yonaguni Monument/ Underwater Ruins Dive Conditions Planner
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Exposure Profile at Yonaguni Monument/ Underwater Ruins
Directional shelter context for incoming swell.
Recent Logged Visits At Yonaguni Monument/ Underwater Ruins
Community dive logs and visit reports for this site.
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Dive Spot Log Averages At Yonaguni Monument/ Underwater Ruins
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Yonaguni Monument/ Underwater Ruins Guide - Sources and Updates
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