Alonissos Marine Park, Greece
    FENGARI SAMOTHRAKIS, ANATOLIKES AKTES, VRACHONISSIDA ZOURAFA KAI THALASSIA ZONI

    HMS M28

    Best months: Jul–Sep

    Protected Area

    FENGARI SAMOTHRAKIS, ANATOLIKES AKTES, VRACHONISSIDA ZOURAFA KAI THALASSIA ZONI

    Why dive here

    HMS M28 is a reef 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
    CharacterReef dive

    The HMS M28, lying within the protected waters of Alonissos Marine Park, offers a genuinely distinctive dive. We love that it's an M15-class monitor, a proper historical vessel from 1915, not just some scattered debris. Dropping down, the sheer scale of the wreck starts to emerge from the blue. You can make out the gun mounts and the hull’s basic structure, all now draped in a thick carpet of sponges and hydroids. Schools of damselfish shimmer around the superstructure, darting in and out of the shadows. Our favourite time to dive the M28 is in the morning, when the sun is higher, because it really illuminates the upper sections and brings out the colours of the encrusting life. Look closely in the nooks and crannies – we’ve seen moray eels peeking out and sometimes a scorpionfish camouflaged on the deck. It’s a site that rewards a slow, deliberate exploration, perfect for divers who appreciate history blended with healthy marine growth. Just be mindful of the currents, which can pick up at times, especially around the exposed sections of the wreck.

    Today06:2317:4411h 22m daylightGolden hour 17:08

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    Conditions

    Ocean conditions, forecast and tides for HMS M28

    HMS M28 Ocean Conditions

    Monthly averages for HMS M28, 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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