Great Barrier Reef, Australia
    Trinity Inlet

    Unity Reef

    Best months: Feb–Mar

    Protected Area

    Trinity Inlet

    Why dive here

    With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - Unity 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

    Unity Reef, for us, is one of those places that reminds you why you got into diving. It’s not about huge pelagics every time, though we have seen a Great Hammerhead cruise through on a deep drift here. What we really love is the sheer density of the smaller stuff. We’re talking about finding Sleepy Gobies peering out from every nook, and the colourful distraction of Ward's Damsels darting amongst the coral – the Frigid Cone shells are surprisingly beautiful, too. The coral itself is a patchwork of textures. You’ll see plenty of robust Staghorn, sure, but keep an eye out for the delicate Branched Sandpaper and the almost architectural Pagoda coral. We always try to hit it on a rising tide. The visibility tends to be at its best then, and the current, while present, helps you glide along effortlessly, letting you focus on the detail. It’s a site for the observant diver, someone who finds as much joy in a cleverly camouflaged Flathead Sleeper as they do in a passing turtle.

    Safety Notes

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

    Today05:5418:1712h 23m daylightGolden hour 17:48

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    Conditions

    Ocean conditions, forecast and tides for Unity Reef

    Unity Reef Ocean Conditions

    Monthly averages for Unity 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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