It is bounded to the west by the Mani peninsula, which separates it from the Messenian Gulf, and to the east by the Cape Maleas peninsula (also known as the Epidavros Limira peninsula), which separates it from the Aegean Sea. To the south it opens onto the Mediterranean Sea. The Mani and Cape Maleas peninsulas are dry and rocky, but the northern shore, fed by the Evrotas River, which empties into the gulf at its apex, is fertile farmland.