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
Dive into Hammerhead Rock off Yonaguni, Japan, where schools of hammerhead sharks patrol dramatic underwater rock formations, possibly ancient ruins. Warm Pacific currents and high visibility make this a thrilling spot for spotting colorful reef fish and exploring mysterious topography—perfect for experienced divers seeking adrenaline and wonder.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Iridescent CardinalfishPristiapogon kallopterusReported here · unconfirmed
Orbicular CardinalfishSphaeramia orbicularisReported here · unconfirmed
Surf RedfishActinopyga mauritianaReported here · unconfirmed
Broadstripe CardinalfishOstorhinchus angustatusReported 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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