5m
    Alonissos Marine Park, Greece
    NISIDES SARONIKOU KOLPOU KAI THALASSIA PERIOCHI

    CAVO SIDERO

    Best months: Jul–Sep

    Protected Area

    NISIDES SARONIKOU KOLPOU KAI THALASSIA PERIOCHI

    Why dive here

    CAVO SIDERO is a wreck dive where divers can encounter dolphins and sea turtles. Water ranges 15-26°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeDolphins and Sea Turtles
    Water15-26°C · warmest July, August, September
    CharacterWreck dive · max 5m

    Cavo Sidero is an interesting dive, certainly not your typical wreck. It’s a carrier that ran aground in a storm back in '81, and what you see today is the scattered remains of that 93-metre vessel, spread over a shallow reef. We love it because it’s a site you can really spend some time exploring, poking around the metal ribs and twisted plates. The stern lies closest to the shore in only 5 metres, making it perfect for an extended no-decompression dive or even a really thorough snorkel. You'll find sections of the hull have become home to damselfish and small wrasse darting between the crevices, while the sunlight catches the shimmer of silversides schooling over the larger pieces of wreckage. Our favourite part is the way the light plays through the broken sections, illuminating the rust-coloured metal and giving it a ghostly feel. It's not a deep-water challenge, but a genuinely engaging archaeological hunt where you piece together the ship’s story yourself.

    Typical CAVO SIDERO Dive Profile

    5mSafety Stop0m5m 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.

    Today06:3117:5611h 25m daylightGolden hour 17:20

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    Conditions

    Ocean conditions, forecast and tides for CAVO SIDERO

    CAVO SIDERO Ocean Conditions

    Monthly averages for CAVO SIDERO, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (38.09, 24.15) (15km away)

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    October Averages

    Sea Temperature

    23°C

    73°F · Range: 21–25.6°C

    Current Speed

    1.41 cm/s

    Direction: SW (225°)

    Chlorophyll-a

    0.13 mg/m³

    Clear water

    Salinity

    34.63 PSU

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

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