5-20m
    Great Barrier Reef, Australia

    Ribbon Number Five Reef

    Best months: Feb–Mar

    Why dive here

    With 154+ marine species recorded in the area - including hammerhead sharks, sea turtles, tiger sharks and napoleon wrasse - Ribbon Number Five 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 · max 5-20m
    StandoutExceptional marine biodiversity

    Ribbon Number Five Reef is one of those spots that sticks with you long after the last dive. We always suggest trying to hit this one early in the morning, before the liveaboards start shuffling around. The light penetration through the shallower sections of the reef, especially around the big bommies of yellow scroll coral, is just fantastic, casting dappled patterns on the sand. We love dropping in here and drifting along the wall, keeping an eye out for the bigger pelagics that cruise by. Black marlin have made an appearance on more than one occasion for us, a real heart-stopper. But it's not just the big stuff; the sheer density of the stony corals and staghorn formations is incredible. You'll find yourself slowly finning over fields of it, spotting tiny wrasse darting between the branches and maybe a sleepy longface emperor tucked into a crevice. It’s a great site for divers who appreciate intricate coral topography and a chance at some exciting open-water encounters.

    Typical Ribbon Number Five Reef Dive Profile

    5mSafety Stop0m5m max~60 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

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

    Today05:5318:1512h 22m daylightGolden hour 17:47

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    Conditions

    Ocean conditions, forecast and tides for Ribbon Number Five Reef

    Ribbon Number Five Reef Ocean Conditions

    Monthly averages for Ribbon Number Five 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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