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
Sanbondake (三本岳) is a boat site 15 minutes from Miyakejima in the Izu Islands, Tokyo, and the place to see pelagics. The current is very fast, so it is dived as a drift; maximum depth 40 m, average around 20 m, advanced divers only with drift experience.
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- 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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