Asia › Japan › Okinawa
Mermaid's Grotto
10–12 mMax Depth
BoatEntry
32Species
Conditions Summary
Model forecast · local time (GMT+9)
Model conditions signal91/100
Waves
0.8 m
4.8 s
Swell
0.5 m
5.2 s
Current speed
0.4 km/h
flowing toward W
Water temperature
27.9°C
Wind
19.5 km/h
→ E
Sea level
1.4 m
WavesWatch
SwellCalm
Current speedCalm
Planning window
20:45–20:00
Calmest model window
Forecast Overview
Sat, Oct 17Watch
Waves0.8–0.8 mCurrent speed0.4 km/h maxWater temperature27.9°C
Sun, Oct 18Watch
Waves0.6–0.8 mCurrent speed0.5 km/h maxWater temperature28.0°C
TodayWatch
Waves0.5–0.6 mCurrent speed0.5 km/h maxWater temperature28.1°C
TomorrowWatch
Waves0.6–0.7 mCurrent speed0.4 km/h maxWater temperature28.1°C
Next 72 hours
Catalog depth10–12 m
Data sources & field guideOpen-Meteo Marine + Weather APIs
Planning context, not a safety guarantee. Coastal model accuracy is limited. Confirm the actual briefing, entry, exit, and suitability with a local operator.
Open-Meteo Marine + Weather APIs →Dive readiness
Collecting the latest marine conditions and forecast signals.
Seasons · water temperature
12-month outlook
Best window
Apr-Nov
Peak month
Aug 28.9°
Jan22.3°
Feb21.5°
Mar21.5°
Apr22.5°
May24.5°
Jun26.6°
Jul28.6°
Aug28.9°
Sep28.3°
Oct27.0°
Nov25.3°
Dec23.7°
Current: mild
Typical visibility: 20 m
Historical planning data from the recorded site profile. Water temperature and conditions can vary by day, depth, and weather; confirm current conditions with a local operator.
Explore nearby centers on the map
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Dive Types
BeachDriftReefWallOceancaveSalt Wateradvanced Difficulty
Questions to ask a local operator
- What are today's current, visibility, entry, and exit conditions?
- Does the planned route stay within my certification and recent experience?
- Are there local permits, conservation rules, or equipment requirements?
Common Species
Barred mudskipper
Periophthalmus argentilineatus
DeepLog6
Monetaria caputserpentis
DeepLog2
Puller
Amphiprion ocellaris
DeepLog2
Chameleon nerite
Nerita chamaeleon
DeepLog1
Cushion seastar
Culcita novaeguineae
DeepLog1
Dark-fin chromis
Pycnochromis atripes
DeepLog1
Great barracuda
Sphyraena barracuda
DeepLog1
Honeycomb grouper
Epinephelus merra
DeepLog1
Horned bull-fish
Heniochus varius
DeepLog1
Indian sea star
Fromia indica
DeepLog1
Melibe engeli
DeepLog1
Moorish idol
Zanclus cornutus
DeepLog1
These are nearby biodiversity records, not a guarantee that every species will be seen on a particular dive.
DeepLog + OBIS →Photos
