Calypso Deep, located in the Ionian Sea south-west of Pylos, Greece, is the deepest part of the Mediterranean Sea, with a maximum depth of 5,267 m (17,280 ft), at 36°34′N 21°8′E / 36.567°N 21.133°ECoordinates: 36°34′N 21°8′E / 36.567°N 21.133°E.
At the Calypso Deep, the African Plate slides under the Aegean Sea Plate, creating the Hellenic Trench.