Alonissos National Marine Park
Protected Area
ETHNIKO THALASSIO PARKO ALONNISOU – VOREION SPORADON, ANATOLIKI SKOPELOS
Why dive here
Alonissos National Marine Park is a reef dive where divers can encounter dolphins and sea turtles. Water ranges 15-26°C, warmest July, August, September.
The Alonissos National Marine Park isn't just one dive site, it's a whole protected zone with several standout spots. We’re particularly drawn to the historical wreck diving here, especially the *Peristera* shipwreck. Dropping down onto that ancient merchant ship, lying at around 25-30 metres, feels like falling back through time. You can make out amphorae still resting in the cargo holds, sometimes even stacked, just as they were thousands of years ago. For us, the real magic is how the wreck has become a living reef. Schools of bogue and damselfish drift through the broken hull, and we’ve spotted morays peeking from behind jars. Look closely and you’ll find jewel anemones clinging to the pottery shards and vibrant red coral starting to encrust the old wood. It’s not a drift dive; it’s a slow exploration, perfect for photographers wanting to capture history and marine life intertwined. We’d suggest going in the shoulder seasons, late spring or early autumn, when the crowds thin out but the water’s still warm and the visibility usually pushes past 20 metres.
Typical Alonissos National Marine Park Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
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Conditions
Ocean conditions, forecast and tides for Alonissos National Marine Park
Alonissos National Marine Park Ocean Conditions
Monthly averages for Alonissos National Marine Park, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (38.09, 24.15) (15km away)
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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