Dive-site story
Set off Onna along Okinawa's western shoreline, the site features limestone formations cut into a coral reef plateau. Divers descend through an enclosed vertical chimney before exiting horizontally onto an open wall, shifting abruptly from shadowed cavern interior to deep ocean blue. The route stands as a focal point among the caverns of Manza.
Vertical descent through a natural limestone chimney
Cavern exit opening out onto the open wall
Macro life tucked in reef crevices alongside pelagics off the drop-off
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Late spring through autumn brings calmer seas and warm water. In contrast, winter winds generate rough surface conditions across the western coast.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Whitetip reef sharkTriaenodon obesus | Common | ||||||||||||
| Green sea turtleChelonia mydas | Common | ||||||||||||
| Pygmy seahorseHippocampus bargibanti | Seasonal | ||||||||||||
| Day octopusOctopus cyanea | Common | ||||||||||||
| AnthiasPseudanthias squamipinnis | Common |
Marine forecast
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