The Mediterranean Sea looks like a clear-cut example of an inland sea, but its deepest point is 5,267 m (17,280 ft) in the Calypso Deep of the Ionian Sea. The Mediterranean is a genuine sea which has been squashed almost out of existence by the movement of Africa against the European tectonic plate. It was formerly part of the ancient Tethys Ocean, which surrounded the old global supercontinent of Pangaea. So the Mediterranean is different from those inland seas which sit on top of continental plates.