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
Syrna (island) Syrna (island) Syrna () or Sirna is a small island about 4 km in area to the south-east of Astypalaia in the Dodecanese group of Greek islands near the south-west coast of Turkey. It is mostly covered with juniper and garrigue scrub. The few inhabitants raise stock, catch fish and practice arable agriculture. The island is important for migrant and breeding seabirds and raptors, including Cory's shearwater, yelkouan shearwater and Eleonora's falcon. A shipwreck of the late Roman period (2nd century CE) was found using sonar technology near the island by the Hellenic Centre for Marine Research in 2000. On