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.
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About this site
Nagahama Sakune (長浜作根) is a site off Kozushima in the Izu Islands, Tokyo, where several reefs are scattered with damselfish schooling around them. Old striped beakfish and spotted knifejaw watch divers from among the larger boulders; intermediate and above, with current.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Roundbelly CowfishLactoria diaphanaReported here · unconfirmed
Decumbent Spanish DancerHexabranchus lacerReported 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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