Kos Kos Kos or Cos (; ) is a Greek island, part of the Dodecanese island chain in the southeastern Aegean Sea, off the Anatolian coast of Turkey. Kos is the third largest island of the Dodecanese by area, after Rhodes and Karpathos; it has a population of 33,388 (2011 census), making it the second most populous of the Dodecanese, after Rhodes. The island measures , and is from the coast of the ancient region of Caria in Turkey. Administratively, Kos constitutes a municipality within the Kos regional unit, which is part of the South Aegean region. The principal town of
Pserimos Pserimos Pserimos () is a small Greek island in the Dodecanese chain, lying between Kalymnos and Kos in front of the coast of Turkey. It is part of the municipality of Kálymnos, and reported a population of 80 inhabitants at the 2011 census. The main industry is tourism, with Greek and other European holidaymakers attracted by its remote location. There are several beaches and a number of taverns, some of which offer accommodation. Pserimos is served by a daily ferry from Pothia, on the island of Kalymnos, and is a destination on the itinerary of a number of cruise boats