The Greek Island Kerkyra
There is a lot more to Corfu below the waves of the beautiful Ionian Sea. The waters are generally quite calm, although you should be aware of strong currents and weaker swimmers are advised to stay near the beach. You can buy a decent snorkeling mask at a local shop and you should be able to pick one up for around 20 Euros. The caves around the coastline provide some exciting caverns and rock formations to explore, so you can take your time to enjoy the serenity of the warm Ionian Sea.