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
Corfu middle point of Gouvia and Corfu Bay, which extends across much of the eastern shore of the island; are known as Lazareto and Ptychia (or Vido). Camping areas can be found in Palaiokastritsa, Agrillia, with four in the northern part, Pyrgi, Roda, Gouvia and Messonghi. The Diapontia Islands (Greek: Διαπόντια νησιά) are located in the northwest of Corfu, (6 km away) and about 40 km away from Italian coasts. The main islands are Othonoi, Ereikoussa and Mathraki. Lazaretto Island, formerly known as Aghios Dimitrios, is located two nautical miles northeast of Corfu; the island has an area of 17.5 acres