Mediterranean Sea million years ago (mya) in less than two years by the Zanclean flood. Water poured in from the Atlantic Ocean through a newly breached gateway now called the Strait of Gibraltar at an estimated rate of about three orders of magnitude (one thousand times) larger than the current flow of the Amazon River. The Mediterranean Sea has an average depth of and the deepest recorded point is in the Calypso Deep in the Ionian Sea. The coastline extends for . A shallow submarine ridge (the Strait of Sicily) between the island of Sicily and the coast of Tunisia divides the
Battle of the Mediterranean holding these points, the Mediterranean Fleet held open vital supply routes. Malta was the lynch-pin of the whole system. It provided a needed stop for Allied convoys and a base from which to attack the Axis supply routes. Italian dictator Benito Mussolini saw the control of the Mediterranean as an essential prerequisite for expanding his "New Roman Empire" into Nice, Corsica, Tunis and the Balkans. Italian naval building accelerated during his tenure. Mussolini described the Mediterranean Sea as "Mare Nostrum" "(our sea)". The warships of the "Regia Marina" (Italian Royal Fleet) had a general reputation as well-designed. Italian small attack