18-30m
    Medes Islands, Spain

    Le Tromblon

    Best months: Jun–Sep

    Why dive here

    With 77+ marine species recorded in the area - including blue sharks, dolphins, ocean sunfish (mola mola), octopuses and sea turtles - Le Tromblon offers some of Medes Islands's richest wreck diving. Water ranges 14-24°C, warmest July, August, September.

    Best timeJun–Sep
    WetsuitA 3mm full wetsuit
    Marine lifeBlue Sharks, Dolphins, Ocean Sunfish (Mola Mola), Octopuses and Sea Turtles · 77+ species recorded
    Water14-24°C · warmest July, August, September
    CharacterWreck dive · max 18-30m
    StandoutRich in charismatic marine life

    Le Tromblon, or the "Blunderbuss," is one of our favourite wreck dives in the Medes Islands, and it’s a site we’ve returned to many times. It's not a massive wreck, but what we love is its character and the way marine life has completely taken it over. The old cannonnière, a small patrol boat, lies broken in two sections, scattered across the seabed at around 20-30 metres. As you descend, the visibility often plays tricks on you, making the metal silhouettes appear and disappear in the blue. We always make a point of looking for the resident scorpionfish, perfectly camouflaged against the rust. You’ll weave through the fragmented hull, and in the nooks and crannies, you’re likely to spot red snapping shrimp waving their antennae. Look closely for painted combers darting in and out, and we’ve often found streaked gurnards grubbing in the sand nearby. The real thrill here is the feeling of diving through history, exploring a site that’s slowly being reclaimed by the sea. It's a dive that rewards slow exploration and a keen eye.

    Typical Le Tromblon Dive Profile

    10m20mSafety Stop0m18m max~50 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.

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

    Today05:4517:0211h 17m daylightGolden hour 16:24

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    Conditions

    Ocean conditions, forecast and tides for Le Tromblon

    Le Tromblon Ocean Conditions

    Monthly averages for Le Tromblon, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (43.2, 5.22) (37km away)

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    October Averages

    Sea Temperature

    20°C

    69°F · Range: 17.4–22.8°C

    Current Speed

    9.85 cm/s

    Direction: SW (246°)

    Chlorophyll-a

    0.182 mg/m³

    Clear water

    Salinity

    38.21 PSU

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

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