Cornwall & Devon, United Kingdom
    St Agnes

    ELTHAM

    Best months: Jul–Sep

    Protected Area

    St Agnes

    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) - ELTHAM 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 Eltham is a wreck that truly tells a story. We’ve always been drawn to wrecks with a bit of history, and this coaster, sunk in 1918, feels like a time capsule. Descending onto the site, the first thing you notice is how she’s broken in two, the bow and stern sections lying separated but still recognisable. It’s not a huge wreck, but that just means it’s more approachable, even on a day when the current is running a little. Inside the hold, if you fancy a quick penetration, you’ll often find conger eels coiled up, their thick bodies blending into the shadows. Around the deck plating, lobsters are tucked into every crevice, waving their antennae as you pass. The real magic here is in the details – the barnacle-encrusted davits, the remains of the ship’s structure now completely colonised by plumose anemones, swaying gently in the surge. It’s a site that rewards a slow exploration, really looking at how nature has reclaimed the steel. We’d suggest hitting it on a neap tide for the calmest conditions; it just makes lingering that much easier.

    Safety Notes

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

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    Conditions

    Ocean conditions, forecast and tides for ELTHAM

    ELTHAM Ocean Conditions

    Monthly averages for ELTHAM, 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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