Cornwall & Devon, United Kingdom
    Castlemartin Coast

    IONIAN

    Best months: Jul–Sep

    Protected Area

    Castlemartin Coast

    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) - IONIAN 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
    StandoutExceptional marine biodiversity

    The Ionian, near St. Govans Head, is a proper chunk of history, even if she’s quite broken up now. This isn't a wreck you penetrate; it's a spread, scattered by the torpedo that sank her in 1917 and then further by hitting the cliffs. We love poking around the debris field, trying to piece together the layout of this huge steamship. You'll find twisted metal plates, sections of hull, and machinery parts, all encrusted with colourful jewel anemones and dead man’s fingers. It’s a site for divers who enjoy exploring and imagining the past. Look for the engine components, often the most identifiable parts, where shoals of pollock often hang out, darting between the girders. On a day with good visibility, the way the light filters through the broken structure, illuminating the vibrant growth, is really something. We’d suggest going at slack tide, as currents can be a nuisance here, making the exploration much more relaxed and enjoyable. It's a sombre place, seven lives were lost, and you feel that sense of history as you fin over the remains.

    Safety Notes

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

    Today06:3717:3711h 0m daylightGolden hour 16:52

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    Conditions

    Ocean conditions, forecast and tides for IONIAN

    IONIAN Ocean Conditions

    Monthly averages for IONIAN, 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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