Great Barrier Reef, Australia
    Michaelmas and Upolu Cays

    Split Bommie, Hastings Reef

    Best months: Feb–Mar

    Protected Area

    Michaelmas and Upolu Cays

    Why dive here

    With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - Split Bommie, Hastings Reef offers some of Great Barrier Reef's richest reef diving. Water ranges 24-30°C, warmest January, February, March.

    Best timeFeb–Mar
    WetsuitNo wetsuit needed, or a rash guard
    Marine lifeHammerhead Sharks, Sea Turtles, Tiger Sharks and Napoleon Wrasse · 154+ species recorded
    Water24-30°C · warmest January, February, March
    CharacterReef dive
    StandoutExceptional marine biodiversity

    Split Bommie at Hastings Reef is one of those sites we always recommend for a relaxed afternoon. The name makes sense once you’re down there – it's a collection of distinct coral heads, or bommies, that sit a little way off the main reef, creating these lovely channels and swim-throughs. At a maximum depth of 13 metres, it’s a brilliant spot for newer divers or anyone just wanting to spend some quality time soaking in the details without worrying about deco. We love the easygoing feel here. You'll drift over big tables of stony coral, their surfaces textured like ancient landscapes, and spot the brilliant fluorescence grass coral glowing subtly in the shadows. Look closely for Giant morays peeking out from their crevices, and keep an eye on the sand patches for Green turtles munching on seagrass. On a sunny day, the light plays beautifully through the shallow water, illuminating schools of Bicolour Parrotfish and Blue-lined Surgeonfish grazing the reef. It’s a gentle, pretty dive, perfect for photographers or just unwinding.

    Safety Notes

    Strong currents typical this month (avg 30 cm/s). Good buoyancy control essential.

    Today05:5218:1512h 23m daylightGolden hour 17:47

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    Conditions

    Ocean conditions, forecast and tides for Split Bommie, Hastings Reef

    Split Bommie, Hastings Reef Ocean Conditions

    Monthly averages for Split Bommie, Hastings Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-15.65, 145.72) (5km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    26°C

    80°F · Range: 24.5–29°C

    Current Speed

    30.07 cm/s

    Direction: S (183.8°)

    Chlorophyll-a

    0.057 mg/m³

    Very clear (oligotrophic)

    Salinity

    35.08 PSU

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

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