30m
    Bornholm, Denmark
    Bornholm: Davids Banke

    MERCIA

    Best months: Jul–Sep

    Protected Area

    Bornholm: Davids Banke

    Why dive here

    With 66+ marine species recorded in the area - including jellyfish lake - MERCIA offers some of Bornholm's richest wreck diving. Water ranges 3-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeJellyfish Lake · 66+ species recorded
    Water3-18°C · warmest July, August, September
    CharacterWreck dive · max 30m

    We’ve spent a fair bit of time poking around the Baltic’s wrecks, and the *Mercia* truly stands out. She's a steamship, sunk back in '39, taken as prize then scuttled by a warship. You drop down onto her at 30 metres, and she’s remarkably intact for her age and circumstances. We love how the Baltic’s low light creates this eerie, almost reverent atmosphere around her; it’s not the bright Caribbean, but there’s a quiet beauty to it. The main draw here is the sheer scale and the sense of history. You can spend a whole dive exploring her stern, making your way past the prop and rudder, then pushing up towards the midships. Expect to find her hull encrusted with mussels, and we often spot decent-sized cod lurking in her holds. Our favourite part is navigating the internal structure, imagining the life she once held. The visibility can vary, but on a good day, when the light penetrates, she’s really something special. She’s a solid pick for experienced wreck divers who appreciate a good historical narrative over flashy corals. Bring a good torch and take your time.

    Typical MERCIA Dive Profile

    10m20m30mSafety Stop0m30m max~30 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

    Depth of 30m - Advanced Open Water certification recommended.

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

    Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:2317:1310h 50m daylightGolden hour 16:22

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    Conditions

    Ocean conditions, forecast and tides for MERCIA

    MERCIA Ocean Conditions

    Monthly averages for MERCIA, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (54.94, 13.85) (7km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    14°C

    57°F · Range: 11.7–16.3°C

    Air Temperature

    12°C

    53°F

    Wind Speed

    8.16 m/s

    15.9 knots

    Atmospheric Pressure

    1013.3 hPa

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

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