The Alboran Sea is the westernmost portion of the Mediterranean Sea, lying between the Iberian Peninsula and the north of Africa. The Strait of Gibraltar, which lies at the west end of the Alboran Sea, connects the Mediterranean with the Atlantic Ocean.Its average depth is 1,461 feet (445 m) and maximum depth is 4,920 feet (1,500 m).The International Hydrographic Organization defines the limits of the Alboran Sea as follows:On the West.