Calypso Deep, the deepest point of the Mediterranean Sea, lies in which submarine trench?

Calypso Deep, the deepest point of the Mediterranean Sea, lies in the Hellenic Trench.

Calypso Deep is in the Ionian Sea, southwest of the Greek Peloponnese, within the long arc of the Hellenic Trench. Its depth is approximately 5,100 to 5,200 metres, depending on the survey and measurement method, making it the Mediterranean’s deepest known point.

The first crewed descent took place on 27 September 1965, when the French bathyscaphe Archimède reached the deep. In February 2020, Victor Vescovo and Prince Albert II of Monaco descended in the submersible Limiting Factor and measured a depth of about 5,109 metres.

The name can be confused with Matapan Deep or Matapan–Vavilov Deep, a larger submarine depression that contains Calypso Deep. The Hellenic Trench itself follows the southern margin of the Aegean region and is linked to complex tectonic movement involving the African and Aegean plates.