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The Alonissos Underwater Museum stands out as Greece's first public underwater archaeological site, opened in 2020, showcasing the Peristera shipwreck from 425-420 BC with thousands of pristine amphorae. Dubbed the "Parthenon of Shipwrecks" for its intact cargo, it blends world-class diving with history in the Northern Sporades' marine park. Divers swim amid ancient relics at 25-29 meters, protected by law and surveillance.
Top pursuits center on guided dives to Peristera, plus newer wrecks like Skatzoura and Faggrou since 2022, all via certified centers. Non-divers head to the Old Village Information Center for VR tours, models, and glass-bottom boat options. Combine with island hikes, bus tours, or nearby Skopelos ferries for a full Sporades adventure.
Dive May-October for warm waters (22-26°C) and 20-30m visibility; avoid winter swells. Expect 45-60 minute dives with strict no-touch rules and archaeologist oversight. Prepare with advanced certification, rent gear locally, and budget €100+ per dive day.
Alonissos locals fiercely protect this UNESCO-recognized marine area, fostering a diver-friendly community through family-run centers and the Ephorate of Underwater Antiquities. Events like inaugural dives with ministers highlight communal pride. Insiders tip early-morning slots for fewer crowds and monk seal sightings.
Book dives 1-2 months ahead via official site or centers like Triton Dive Center, especially June-August when seas calm and visibility peaks. Confirm PADI Advanced Open Water certification; entry fee €50 plus dive costs €50-80. Check weather via Poseidon system app for safe conditions.
Arrive at Patitiri port, bus to Old Village Information Center for briefing. Rent gear on-site to avoid transport hassles. Practice buoyancy control to stay 3+ meters from artifacts per rules enforced by archaeologists.