Poor Knights Islands, New Zealand
    Poor Knights Islands

    Matts Crack

    Best months: Jan–Apr

    Protected Area

    Poor Knights Islands

    Why dive here

    With 79+ marine species recorded in the area - including blue sharks, dolphins, hammerhead sharks, humpback whales and orcas - Matts Crack offers some of Poor Knights Islands's richest reef diving. Water ranges 15-22°C, warmest January, February, March.

    Best timeJan–Apr
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Hammerhead Sharks, Humpback Whales and Orcas · 79+ species recorded
    Water15-22°C · warmest January, February, March
    CharacterReef dive
    StandoutRich in charismatic marine life

    Matt's Crack at the Poor Knights always delivers. We love the way the light streams in, particularly around midday, creating those iconic blue silhouettes that photographers chase. You drop down into this 60-metre-long fissure, about 10 metres wide at the mouth, narrowing to a snug 3 metres further in. It’s open to the surface the whole way, so you’re never truly in a cave, just a very dramatic canyon. Inside, the walls are plastered with sponges and anemones, and you’ll spot scorpionfish tucked into crevices. Keep an eye out for nudibranchs crawling across the kelp and sea rimu. Demoiselles and maomao flutter in the sun-dappled sections, while deeper in the shadows, big snapper often lurk. For us, the thrill is in the atmosphere, that dramatic play of light and shadow, more than any single creature. It’s a pretty easy dive, maxing out at 20 metres, so it suits most divers looking for something a bit different.

    Today05:4518:3212h 47m daylightGolden hour 17:58

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    Conditions

    Ocean conditions, forecast and tides for Matts Crack

    Matts Crack Ocean Conditions

    Monthly averages for Matts Crack, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-35.84, 174.61) (14km away)

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    October Averages

    Sea Temperature

    16°C

    60°F · Range: 14.8–17.1°C

    Current Speed

    11.4 cm/s

    Direction: SE (142.1°)

    Chlorophyll-a

    0.388 mg/m³

    Moderate productivity

    Salinity

    35.44 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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