Fernando de Noronha, Brazil
    Área De Relevante Interesse Ecológico Orla Marítima

    Mercurius

    Best months: Dec

    Protected Area

    Área De Relevante Interesse Ecológico Orla Marítima

    Why dive here

    With 44+ marine species recorded in the area - including sea turtles - Mercurius offers some of Fernando de Noronha's richest reef diving. Water ranges 27-29°C, warmest March, April, May.

    Best timeDec
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeSea Turtles · 44+ species recorded
    Water27-29°C · warmest March, April, May
    CharacterReef dive

    We love Mercurius for the sheer sense of immersion it offers. This tugboat, sunk deliberately alongside Saveiros and Taurus, rests upright at 28 metres, remarkably intact. You can duck into the control room, peer down at the propeller, and even fin your way into the engine room. It’s a proper exploration, not just a fly-by. Inside the wreck, the light filters in, illuminating schooling grunts and squirrelfish, while out on the deck, we often see thick schools of jacks swirling, sometimes so dense they momentarily block the sun. Look closely and you'll spot orangespotted filefish picking their way across the superstructure, and we’ve had some cracking encounters with great barracudas hanging motionless in the blue. Keep an eye on the sand around the wreck too, as nurse sharks often snooze there. Visibility averages a clear 21 metres, making this an ideal site for those comfortable with wreck penetration and who appreciate a wreck teeming with life.

    Today05:5918:1312h 14m daylightGolden hour 17:46

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    Conditions

    Ocean conditions, forecast and tides for Mercurius

    Mercurius Ocean Conditions

    Monthly averages for Mercurius, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-3.84, -32.38) (0km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    27°C

    81°F · Range: 26.5–27.9°C

    Current Speed

    29.15 cm/s

    Direction: NW (329°)

    Chlorophyll-a

    0.035 mg/m³

    Very clear (oligotrophic)

    Salinity

    36.39 PSU

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

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