2m
    Cornwall & Devon, United Kingdom
    Merthyr Mawr

    MALLENY (OR MALLENEY)

    Best months: Jul–Sep

    Protected Area

    Merthyr Mawr

    Why dive here

    With 176+ marine species recorded in the area - including blue sharks, dolphins, dwarf minke whales, humpback whales and ocean sunfish (mola mola) - MALLENY (OR MALLENEY) offers some of Cornwall & Devon's richest wreck diving. Water ranges 10-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeBlue Sharks, Dolphins, Dwarf Minke Whales, Humpback Whales and Ocean Sunfish (Mola Mola) · 176+ species recorded
    Water10-18°C · warmest July, August, September
    CharacterWreck dive · max 2m
    StandoutExceptional marine biodiversity

    Malleny, or Malleney, sits low on Tusker Rock, a sombre reminder of that October night in 1886. At just two metres deep, it's less a deep exploration and more a shallow archaeological stroll, perfect for a long snorkel or a gentle dive when the tide is high and calm. We find its accessibility incredibly charming; you can spend ages poring over the scattered timbers without worrying about narcosis or deco limits. What remains of the 62-metre sailing vessel is strewn across the seabed, a jumble of ribs and hull plates colonised by the resilient life of the Cornish coast. Look for the glint of wrasse darting between the rusted ironwork, and the patient sway of kelp fronds, providing cover for velvet swimming crabs. It’s not about grand swim-throughs here; it’s about the quiet contemplation of history, feeling the gentle surge over the wreck, and appreciating the surprising density of small creatures clinging to every surface. This site is our pick for anyone who loves history and the simple joy of an unhurried shallow dive, particularly good on a sunny, slack tide day.

    Typical MALLENY (OR MALLENEY) Dive Profile

    Safety Stop0m2m 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

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today06:3217:3211h 0m daylightGolden hour 16:47

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    Conditions

    Ocean conditions, forecast and tides for MALLENY (OR MALLENEY)

    MALLENY (OR MALLENEY) Ocean Conditions

    Monthly averages for MALLENY (OR MALLENEY), sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (50.44, -2.73) (3km away)

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    October Averages

    Sea Temperature

    17°C

    62°F · Range: 15.1–17.5°C

    Air Temperature

    13°C

    56°F

    Wind Speed

    8.14 m/s

    15.8 knots

    Atmospheric Pressure

    1011 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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