Kasos Kasos Kasos (; , ), also Casos, is a Greek island municipality in the Dodecanese. It is the southernmost island in the Aegean Sea, and is part of the Karpathos regional unit. , its population was 1084. The island is known in Italian as "Caso". Kasos lies southwest of Karpathos, between this island and Crete. Adjacent to the island is the Strait of Kasos, through which some of the Modified Atlantic Water enters the Sea of Crete. Its shape is elliptic and resembles that of Rhodes. The main island has a surface of , and it is long and wide.
Arkoi that calls at the island, as well as occasional small ferries to other nearby islands such as Marathi. Arkoi Arkoi (; also Arkioi, Αρκιοί) is a small Greek island which is part of the Dodecanese archipelago. It is situated in the eastern Aegean Sea, close to the Turkish Aegean Coast. The island belongs to the municipality of Patmos, and has a population of 54 inhabitants at the 2001 census. The small population means that there is no real capital, but most inhabitants live close to the main harbour with the rest living scattered around the island on higher ground. The