High Quality Content by WIKIPEDIA articles! The Ionian Sea is an arm of the Mediterranean Sea, south of the Adriatic Sea. It is bounded by southern Italy including Calabria, Sicily and the Salento peninsula to the west, and by southwestern Albania, including Saranda and Himara, and a large number of Greek islands, including Corfu, Zante, Kephalonia, Ithaka, and Lefkas to the east. The islands are collectively referred to as the Ionian Islands, and other islands include the Strophades, Sphagia, Schiza, Sapientza and Kythira. The sea is one of the most seismic areas in the world. There are ferry routes between Patras and Igoumenitsa, Greece, and Brindisi and Ancona, Italy, that cross the east and north of the Ionian Sea, and from Piraeus westward.