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
Cave 20 sits off Zanzibar Island in the Zanzibar Archipelago, along the Tanzanian coast of the Indian Ocean, reached by boat trips run from towns such as Stone Town or Nungwi. It is rated an advanced dive with a maximum depth of around 28 metres. Divers have also reported garden eels at the site.
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.
Garden eelGarden eelReported here · unconfirmed
Indo-Pacific Rock-boring UrchinEchinometra mathaeiReported here · unconfirmed
Spotted LinckiaLinckia multiforaReported here · unconfirmed
Red-knobbed Sea StarProtoreaster linckiReported here · unconfirmed
Three-spot DascyllusDascyllus trimaculatusReported here · unconfirmed
Scissortail SergeantAbudefduf sexfasciatusReported here · unconfirmed
Tawny Hermit CrabCoenobita rugosusReported here · unconfirmed
Collector UrchinTripneustes gratillaReported here · unconfirmed
Snake Sea CucumberSynapta maculataReported 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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