Antikythera or Anticythera, known in antiquity as Aigilia, is a Greek island lying on the edge of the Aegean Sea, between Crete and Peloponnese. Since the 2011 local government reform, it is part of the municipality of Kythira island. Antikythera may also refer to the Kythira-Antikythira Strait, through which Mediterranean water enters the Sea of Crete. Its land area is 20.43 square kilometres, and it lies 38 kilometres south-east of Kythira.