Coral Sea, Australia
    Edgecumbe Bay

    Sealark Patch

    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 - Sealark Patch offers some of Coral Sea's richest reef 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
    CharacterReef dive
    StandoutRich in charismatic marine life

    Sealark Patch. Now that’s a name that doesn’t quite prepare you for what’s beneath. We’ve always found this place to be one of the Coral Sea’s quieter triumphs. It’s not about dramatic drop-offs here, but rather a sprawling, intricate coral network that just keeps giving. Drop in, and you’re immediately enveloped in a busy world. Schools of Bleeker’s Surgeonfish shimmer around the coral heads, and you’ll often spot the Cleaner Mimics diligently working. We love how the large meandroid brain corals create these mini-cities, perfect for peeking into. Keep an eye out for the Actor Coral Goby, tucked away doing its thing. If you’re lucky, really lucky, a Dugong might even cruise by, though we’ve only seen that a couple of times. It’s a site that rewards slow, observant diving, where you can really appreciate the smaller interactions. This is a fantastic spot for anyone who enjoys a leisurely drift and wants to immerse themselves in a healthy, bustling reef. Visibility here can be incredible, often pushing past 30 metres, giving you a real sense of the reef's scale even when you’re just hovering over a patch of lesser star coral. Our favourite time to dive Sealark Patch is usually mid-morning, just as the sun gets high enough to really illuminate the deeper sections without being too harsh. It's a place that reminds you why you got into diving in the first place.

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

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    Conditions

    Ocean conditions, forecast and tides for Sealark Patch

    Sealark Patch Ocean Conditions

    Monthly averages for Sealark Patch, 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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