15-30m
    Inner Islands, Seychelles
    Baie Ternay Marine National Park

    Dredger Rock, Mahé

    Best months: Oct–Feb

    Protected Area

    Baie Ternay Marine National Park

    Why dive here

    With 183+ marine species recorded in the area - including barracuda, dolphins, sea turtles, sperm whales and lionfish - Dredger Rock, Mahé offers some of Inner Islands's richest reef diving. Water ranges 27-30°C, warmest March, April, May.

    Best timeOct–Feb
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Dolphins, Sea Turtles, Sperm Whales and Lionfish · 183+ species recorded
    Water27-30°C · warmest March, April, May
    CharacterReef dive · max 15-30m
    StandoutExceptional marine biodiversity

    Dredger Rock sits just a short hop from Beau Vallon, a quick ten-minute boat ride that often feels even shorter when the sun’s out. We moor directly onto the wreck, which means no faffing about with drift lines or navigating currents before you're ready. The ship rests on a sandy bottom, flat on its side at a maximum of 24 metres, though we usually find the best bits are around 19m. What makes Dredger Rock a standout for us isn't its size, but how utterly colonised it is. The wreck structure itself is quite broken, but that provides endless nooks for life to hide. Expect to see big schools of yellow snapper moving like a single organism, and we’ve often spotted stonefish blending perfectly into the metalwork. Our favourite find here has to be the pipefish, sometimes in pairs, swaying gently with the surge. Visibility averages 13 metres, which is often plenty to appreciate the scale. Keep an eye out just off the wreck into the sand; we've seen white-tip reef sharks cruising past, and once, a guitarfish glided by, a real treat. It’s a site that rewards slow exploration, peering into every shadowy corner, perfect for photographers or anyone who likes to linger.

    Typical Dredger Rock, Mahé 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.

    Today06:0018:1212h 11m daylightGolden hour 17:44

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    Conditions

    Ocean conditions, forecast and tides for Dredger Rock, Mahé

    Dredger Rock, Mahé Ocean Conditions

    Monthly averages for Dredger Rock, Mahé, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-4.5, 55.52) (2km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    28°C

    82°F · Range: 26.1–30.1°C

    Current Speed

    7.28 cm/s

    Direction: W (285.9°)

    Chlorophyll-a

    0.213 mg/m³

    Clear water

    Salinity

    35.24 PSU

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

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