Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
Dived here today? How were conditions vs. what we showed?
About this site
Gakko Shita (学校下) is a shore-entry site on the west side of Miyakejima in the Izu Islands, Tokyo, entered over boulders. About 100 m straight offshore the bottom drops more than 10 m, and the site is known for its table coral, with plenty of sweepers and angelfish and a chance of pelagics; maximum depth 25 m, average around 15 m, intermediate and above. The sandy seabed adds sand-dwelling life, and the site is closed for days at a time when westerly and south-westerly winds blow.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Marbled DragonetNeosynchiropus ocellatusReported here · unconfirmed
Praealticus tanegasimaeReported here · unconfirmed- Coral DragonetSynchiropus corallinusReported here · unconfirmed
- Pacific Starry DragonetSynchiropus moyeriReported here · unconfirmed
Japanese AngelfishCentropyge interruptaReported here · unconfirmed
Izu DragonetCallionymus izuensisReported here · unconfirmed
Fourline CardinalfishOstorhinchus doederleiniReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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