Inner Islands, Seychelles
    Booby Island

    Roche Grand Maman

    Best months: Oct–Feb

    Protected Area

    Booby Island

    Why dive here

    With 183+ marine species recorded in the area - including barracuda, dolphins, sea turtles, sperm whales and lionfish - Roche Grand Maman offers some of Inner Islands's richest 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
    StandoutExceptional marine biodiversity

    Roche Grand Maman is one of those sites that just feels right, a solid favourite of ours in the Inner Islands. You drop onto a granite boulder landscape, a classic Seychelles feel, but with a surprising amount of detail packed into the cracks and crevices. We love drifting along here, letting the gentle surge nudge us past the coral growth, which tends to favour the robust plate and brain corals on the exposed faces. Keep your eyes peeled low. This isn't a big pelagic site, though we’ve seen the occasional curious pacific cornetfish glide past. Instead, it’s all about the smaller stuff. We’ve spent ages watching the little shouldermark eviota darting among the rocks, and those ostrich gobies are just charming. Look for candy cane wrasse zipping through the coral heads, their colours really pop against the granite. You'll also spot blackspot surgeonfish schooling up, and the honeycomb morays are often peeking out from their rocky hideaways. We always find a few arthritic spider conchs trundling along the sandy patches between the boulders. It’s a site that rewards a slow pace and an observant eye, great for photographers who like to focus on macro and medium-sized reef fish without fighting strong currents.

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    Conditions

    Ocean conditions, forecast and tides for Roche Grand Maman

    Roche Grand Maman Ocean Conditions

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

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    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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