Zanzibar & Pemba, Tanzania
    Maziwe Island

    Renco

    Best months: Jul–Oct

    Protected Area

    Maziwe Island

    Why dive here

    With 312+ marine species recorded in the area - including barracuda, blue-spotted stingrays, dolphins, eagle rays and hammerhead sharks - Renco offers some of Zanzibar & Pemba's richest cave diving. Water ranges 26-30°C, warmest February, March, April.

    Best timeJul–Oct
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Blue-Spotted Stingrays, Dolphins, Eagle Rays and Hammerhead Sharks · 312+ species recorded
    Water26-30°C · warmest February, March, April
    CharacterCave dive
    StandoutExceptional marine biodiversity

    Renco Bomi is one of those sites we always try to hit when we're around Pemba, especially if we've got a macro lens handy. It’s essentially a big coral head, its top sitting around 5m, then sloping down to about 13m. You can feel the age of the coral here, even with some patches of fishing damage, the structure itself is just impressive. We love drifting along the deeper sections, keeping our eyes peeled for those truly special finds. This is a site that rewards patience. We've often found frogfish tucked into crevices, their skin perfectly mimicking the coral. Pipefish sway gently with the current, and if you’re really lucky, you might spot a harlequin shrimp, a splash of colour against a seastar, feasting away. It's a photographer's dream for the smaller stuff. Visibility averages 12m, which is good enough to spend your entire dive exploring every nook and cranny. Renco is perfect for divers who enjoy a slower pace, those who get a thrill out of spotting the unusual, and anyone with a keen eye for detail.

    Safety Notes

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

    Today06:0418:1612h 12m daylightGolden hour 17:49

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    Conditions

    Ocean conditions, forecast and tides for Renco

    Renco Ocean Conditions

    Monthly averages for Renco, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-5.98, 39.4) (10km away)

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    October Averages

    Sea Temperature

    27°C

    81°F · Range: 25.9–28.4°C

    Air Temperature

    26°C

    79°F

    Wind Speed

    4.72 m/s

    9.2 knots

    Atmospheric Pressure

    1013.8 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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