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
Black Rock lies within the Aitutaki lagoon, part of the Cook Islands group in the South Pacific, an atoll formation southeast of Rarotonga. The lagoon is known for its shallow, sheltered waters bounded by a coral reef, with the surrounding motu and reef passages typically accessed by boat from the main island.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Lollyfish Sea CucumberHolothuria atraReported here · unconfirmed
Indo-Pacific Rock-boring UrchinEchinometra mathaeiReported here · unconfirmed
Blue LinckiaLinckia laevigataReported here · unconfirmed
Greenfish Sea CucumberStichopus chloronotusReported here · unconfirmed
Small Giant ClamTridacna maximaReported here · unconfirmed
Blue-black UrchinEchinothrix diademaReported here · unconfirmed
Surf RedfishActinopyga mauritianaReported 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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