- Depth range
- 6–38 m20–125 ft
- Difficulty
- Advanced
- Entry
- Boat entry
- Visibility
- 15–30 m49–98 ft
- Water temperature
- 21–29°C70–84°F
Dive-site story
What makes this site worth diving
Along Onna's limestone coast on Okinawa Main Island, Toilet Bowl is named for a natural chute where water surges into a bowl-shaped reef recess. A vertical wall drops past 35 meters into deep water. Deep sea fans on the wall host macro critters, while small caverns near the seabed shelter resting whitetip reef sharks. Wave energy builds inside the upper chute, requiring comfort in moving water.
Vertical limestone wall dropping past 35 meters
Resting whitetip reef sharks in seabed caverns
Natural surge chute and bowl-shaped reef recess
Location
Find the site
Use the map to plan with your operator and confirm the exact entry point on the day.
Plan this dive with care
- Do not enter the chute during heavy swell to avoid being buffeted against rocks.
- Monitor depth gauges closely along the sheer wall.
Seasonality
Best time to dive
- J—
- F—
- M—
- A—
- MBest
- JBest
- JBest
- ABest
- SBest
- OBest
- N—
- D—
Prevailing southerly winds from May through October keep Okinawa's west coast smooth.
Marine life
What you may encounter
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Whitetip reef sharkTriaenodon obesus | Common | ||||||||||||
| Hawksbill sea turtleEretmochelys imbricata | Common | ||||||||||||
| Bargibant's pygmy seahorseHippocampus bargibanti | Seasonal | ||||||||||||
| Day octopusOctopus cyanea | Common |
Marine forecast
Current and next 48 hours
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