Vouliagmenis Lake

Warm water all year long thanks to thermal sources. Scuba Diving is not allowed there anymore unless you get a special permission to explore the caves (because several people already died doing that) Fresh and sea waters are mixed there thanks to a cave system. Snorkelling or freediving is great along the walls and at entrance of caves. If you stay still for a few minutes, dozens of small black fish come and "clean" your skin :) Relaxed atmosphear, bathrooms, drinks and food available. Check out the video. Access was 7€ per day in 2008.