
Kerama Islands · Japan · Pinnacle · Reef
Tokashiki Three Rocks
Three rock heads with table coral, 5 m down to 30 m
Area photo: DavideGorla · CC BY 2.0
Sanbon Nene — Three Rocks — lies in Tokashiki Village waters and is built around three underwater rock heads standing off the bottom. Published depth spans 5 m to 30 m, currents are described as gentle, and the coral on the shallower rock is table and branching growth. Green turtles are a frequent sighting.
Also known as Sanbon Nene.
Where it is and how deep
26.1952° N, 127.3430° EPublished position for this site.
The dive
Three rock heads give the site its name and its shape. They stand clear of the bottom in Tokashiki Village waters, and the published depth range across the site runs from 5 m at the top of the structure to 30 m at its base, so how deep the dive goes is a choice rather than a fixed profile. The current across it is described as gentle.
Table and branching corals cover the shallower rock, and green turtles are listed as a high-probability sighting, with gobies among the reef fish holding on the structure. Nothing is published about moorings, the entry point or the order the three rocks are dived, so the depth plan and the route are the shop's call on the day.
Marine life and season
- Sea turtles
- Pristine corals
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair | Fair | Good | Prime | Prime | Prime | Prime | Prime | Good | Good | Good | Fair |
Season follows Kerama Islands: Calmest seas and best clarity run April-September; winter brings choppier northeast winds and cooler water.
Questions divers ask
How deep is Sanbon Nene?+
Depths on the site run from 5 m to 30 m. The tops of the three rocks are shallow enough for any certification level, while the 30 m bottom puts the full profile into advanced or deep-trained territory.
Sources
- Tokashiki Three Rocks (Sanbon Nene) dive site — Scubago / SSI MyDiveGuide
More dive sites in Kerama Islands
Coral garden
Coral shelves to 18 m with green turtles as the constant
Coral colonies on white sand, boat access, down to 25 m
Coral garden
Pastel coral garden at 11 m with a high turtle hit rate
Sunlit crevasses and caves in a rock wall from 3 to 22 m
Similar dives elsewhere
Pinnacle
Isomura
Katsuura & Namegawa · Japan
Houndsharks resting in a cave at the tip of the south reef
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Ootaka-ne
Miura Peninsula · Japan
Soft corals blanketing the walls of the northern drop-off
A holed rock at the surface, a coral-covered pinnacle below
Turtles and whitetips resting under a quiet 10 m pinnacle


