Ionian Sea in the east: Ionian Sea The Ionian Sea (, "Iónio Pélagos" ; ; ) is an elongated bay 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, southern Albania to the north, and the west coast of Greece. All major islands in the sea belong to Greece. They are collectively named the Ionian Islands, the main ones being Corfu, Kefalonia, Zakynthos, Lefkada, and Ithaca. There are ferry routes between Patras and Igoumenitsa, Greece, and Brindisi and Ancona, Italy, that cross the east and north
Ionian Sea Sea, and from Piraeus westward. Calypso Deep, the deepest point in the Mediterranean at , is located in the Ionian Sea, at . The sea is one of the most seismically active areas in the world. The name "Ionian" comes from the Greek language . Its etymology is unknown. Ancient Greek writers, especially Aeschylus, linked it to the myth of Io. In Ancient Greek the adjective "Ionios" () was used as an epithet for the sea because Io swam across it. According to the "Oxford Classical Dictionary", the name may derive from Ionians who sailed to the West. There were