All resultsExplore/Okinawa/Mermaid's Grotto
Mermaid's Grotto
Onna, Okinawa, Japan
EntryShore
Max depth39.6 m
LevelEstimated: Advanced and up
Water bodyEast China Sea
Water temp22–29°C
Estimated from climate dataMay
About this site
Mermaid's Grotto is a cave, drift, reef and wall dive site near Onna, Okinawa Prefecture, Japan, in the East China Sea. It is reached from the shore with a maximum depth of about 40 m. Marine life recorded within about 5 km (OBIS/GBIF) includes nudibranchs, sea fans, soft corals, sea turtles, lionfish. Typical surface water temperature ranges from about 22 to 29 °C over the year.
Conditions by month
BestGoodMixedOctoberGood
Generally good diving.
Marine life
Recorded nearby
Luzon SeastarEchinaster luzonicus
Azure Sea StarLinckia laevigata
Rock-boring UrchinEchinometra mathaei- Green TurtleChelonia mydas
- LionfishPterois volitans
Day OctopusOctopus cyanea
Smooth Box CrabCalappa hepatica
Boring ClamTridacna crocea
Nearby sites
- 1Okinawa Manza Dream Hole0.7 km
- 2Manza Coral1.3 km
- 3Kin Red9.0 km
- 4Blue Cave9.4 km
- 5Kadena North Steps19 km
- 6Jam, Kadena North19 km
Straight-line distances.
Sources: Species occurrences: OBIS (CC BY 4.0), GBIF.org