2m
    Alonissos Marine Park, Greece
    PARAKTIA KAI THALASSIA ZONI MAKRONISOU

    HELENA

    Best months: Jul–Sep

    Protected Area

    PARAKTIA KAI THALASSIA ZONI MAKRONISOU

    Why dive here

    HELENA 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 2m

    The Helena wreck, just off Alonissos, is a surprisingly intimate dive. We love that it’s right there at two metres, making it accessible for almost anyone, snorkelers included. This isn't a massive, imposing wreck, but a smaller yacht, the kind you can really get a sense of. We’ve finned over it countless times, always spotting something new. The bow is often draped in fishing nets, home to little scorpionfish and often a shy octopus tucked into a shadowy corner. Further back, the deck offers fantastic photographic opportunities; sunlight filters through the shallow water, illuminating the growth of green algae and the small clouds of juvenile damselfish that dart in and out of the skeletal remains of the cabin. It’s a great spot for an extended safety stop, or even your whole dive if you take your time and explore every nook. Look out for nudibranchs creeping along the railings – they’re easy to miss if you’re not paying attention. We'd suggest going in the morning before any wind picks up, when the surface is calmest and the light is best for peering into the wreck's interior.

    Typical HELENA Dive Profile

    Safety Stop0m2m 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.

    Today06:2717:5311h 25m daylightGolden hour 17:17

    Nearest Dive Centres to HELENA

    Dive shops near HELENA

    View all dive centres in Alonissos Marine Park

    Reviews for HELENA

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for HELENA

    HELENA Ocean Conditions

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

    ExcellentGreatGoodFairPoor★Best monthsThis month

    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)

    Plan & book

    Ways to dive Alonissos Marine Park, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Alonissos Marine Park

    Places to stay

    via Booking.com

    Hotels and dive resorts near Alonissos Marine Park.

    Search stays in Alonissos Marine Park

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near HELENA

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Alonissos Marine Park