HMS Coriolanus
Conditions
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
HMS Coriolanus is a British Royal Navy minesweeper wreck lying approximately 11 nautical miles from Umag, Croatia, in the northern Adriatic Sea. The vessel displaced 554 tons, measured 46 m in length and 8.5 m in width, and sank on 5 May 1945 after striking a floating mine. 2025 marks the 80th anniversary of her loss. Over the decades the wreck has become an artificial reef, now home to a variety of marine life.
The wreck sits at a maximum depth of 28 m. Visibility varies considerably, ranging from 5 m to 30 m depending on conditions.
The dive is rated advanced and is suitable for experienced divers only.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Painted ComberSerranus scribaReported here · unconfirmed
East Atlantic Peacock WrasseSymphodus tincaReported here · unconfirmed
Warty CrabEriphia verrucosaReported here · unconfirmed
Mediterranean DamselfishChromis chromisReported here · unconfirmed
Marbled CrabPachygrapsus marmoratusReported 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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