Dirty Rock
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
Dirty Rock is one of the more popular dive sites at Cocos Island, and it is rated advanced. It is the more challenging of the island's best known dives, with boulders and pinnacles to manoeuvre around, and hammerhead sharks swim among them.
Marble rays are plentiful here, and a whale shark is occasionally seen. The boulders and pinnacles rise from deep water, so depth needs watching.
Currents are strong and swells can be large, which adds to the challenge of the dive.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Hammerhead sharkHammerhead sharkReported here · unconfirmed
Whale SharkRhincodon typusReported 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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