Sapientza or Sapienza Σαπιέντζα is a Greek island off the southern coast of the Peloponnese, near the city of Methóni. It is administratively part of the municipality of Pylos-Nestor, in Messenia. The 2011 census reported a population of two inhabitants. Sapientza is the second largest island of the Messenian Oinousses, a small group island which consists of three small islands. Its name is of Italian origin and means wisdom. The Calypso Deep, the deepest point of the Mediterranean Sea at 5,267 metres (17,280 ft), is located south-west of Sapientza.