Zanzibar & Pemba, Tanzania
    Chumbe Island Coral Park (CHICOP)

    The Great Northern

    Best months: Jul–Oct

    Protected Area

    Chumbe Island Coral Park (CHICOP)

    Why dive here

    With 312+ marine species recorded in the area - including barracuda, blue-spotted stingrays, dolphins, eagle rays and hammerhead sharks - The Great Northern offers some of Zanzibar & Pemba's richest wreck 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
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    The Great Northern is one of our favourite wreck dives, especially for something so accessible. She went down on New Year’s Eve, 1902, so there’s over a century of growth on her hull now, sitting in the sand at a max of 13m. We’ve had dives here with visibility touching 20m, but 10-15m is more common, painting the scene in a soft, ethereal light. You’re not going deep, but that just means more bottom time to explore the nooks and crannies. We regularly spot those slender alligator pipefish darting amongst the twisted metal, and the peacock-tail anemone shrimp are always a delight – keep your eyes peeled for their iridescent colours. The corals here, particularly the soft varieties, have really taken hold, creating these vibrant patches against the dark wreck. We’ve spent whole safety stops just watching the bicolour parrotfish graze the reef, their crunching audible if you listen closely. It’s a photographer’s dream, particularly for macro, and the gentle conditions make it perfect for newer wreck divers or anyone who just wants a relaxed, fascinating dive.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today06:0418:1712h 13m daylightGolden hour 17:50

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    Conditions

    Ocean conditions, forecast and tides for The Great Northern

    The Great Northern Ocean Conditions

    Monthly averages for The Great Northern, 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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