15-40m
    Coral Sea, Australia
    Edgecumbe Bay

    Black Island “WONDERWALL“

    Best months: Mar–Jul

    Protected Area

    Edgecumbe Bay

    Why dive here

    With 113+ marine species recorded in the area - including dugongs, grey reef sharks, humpback whales, sea turtles and tiger sharks - Black Island “WONDERWALL“ offers some of Coral Sea's richest wall diving. Water ranges 25-30°C, warmest January, February, March.

    Best timeMar–Jul
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeDugongs, Grey Reef Sharks, Humpback Whales, Sea Turtles and Tiger Sharks · 113+ species recorded
    Water25-30°C · warmest January, February, March
    CharacterWall dive · max 15-40m
    StandoutRich in charismatic marine life

    Black Island’s “Wonderwall” is a peculiar spot, and we mean that in the best way. For a wall dive, it’s remarkably shallow, topping out at 14 metres, which makes it perfect for longer bottom times and really soaking in the details. Visibility here can swing wildly – from a crisp 10 metres to a silty 5 metres, especially with a strong tidal push, so check with your skipper before gearing up. When it’s good, the wall itself is a tapestry of corals: bold plates of turbinaria coral, delicate staghorns, and those chunky pavona corals we love, all vying for space. What really gets us though are the fish schools. We’re talking fusiliers so dense they create shimmering curtains, baitfish swarming in nervous clouds, and the always-entertaining damselfish darting between coral heads. You’ll spot dusky parrotfish grazing, and the occasional humphead unicornfish cruising by. And keep those eyes peeled for turtles – they often drift past the wall’s edge. If you’re into macro, those devilishly camouflaged squid are often lurking, but good luck spotting them! This site is a great pick for newer divers or anyone who loves to take their time exploring a vibrant, fish-filled reef without the pressure of deep depths.

    Typical Black Island “WONDERWALL“ Dive Profile

    5m10m15mSafety Stop0m15m max~50 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today05:3818:0612h 27m daylightGolden hour 17:36

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    Conditions

    Ocean conditions, forecast and tides for Black Island “WONDERWALL“

    Black Island “WONDERWALL“ Ocean Conditions

    Monthly averages for Black Island “WONDERWALL“, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-16.5, 148) (0km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    26°C

    79°F · Range: 25.4–29°C

    Current Speed

    10.3 cm/s

    Direction: SE (119.1°)

    Salinity

    35.38 PSU

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

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