Kalymnos, is a Greek island and municipality in the southeastern Aegean Sea. It belongs to the Dodecanese and is located between the islands of Kos and Leros the latter is linked to it through a series of islets.Kalymnos lies between two to five hours away by sea from Rhodes. In 2010 the island’s population was around 14,000 people making it the third most populous island of the Dodecanese, after Kos and Rhodes. It is known in Greece for the affluence of much of its population, and also stands both the wealthiest member of the Dodecanese and one of the wealthiest Greek islands overall. The Municipality of Kalymnos, which includes the populated offshore islands of Pserimos ,Telendos, Kalolimnos, and Platti, as well as several uninhabited islets, with crystal clear waters and isolated beaches perfect for relaxing and enjoying your time on the island. Kalymnos is mainly mountainous, with a complicated pattern. The coastline is very irregular, with many sheltered coves. There are some springs, one among them being thermal. The soil is mainly made of limestone, but in the valleys there is a compact bank of volcanic tuff, relic of an ancient volcano, located near the village of Kantouni. The island is mainly barren, except the two fertile valleys of Vathi and Pothia, where olives, oranges and vineyards grow. The usage of sponge was first mentioned in the works of Aristotle and Homer. Since the ancient times, the life and culture of Kalymnos Island was linked to this marine animal; this is the reason Kalymnos is also known as the “Sponge-divers’ island”. Sponge diving has always been a common occupation on Kalymnos and sponges have been the main source of income of the Kalymnians bringing wealth on the island and making it famous in the Mediterranean Nowadays tourism has become a second resource of economic growth for all residents, who every summer see their island full of visitors mainly those who appreciate the island’s tranquility and lovely beaches.