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
Snake Island (Black Sea) Snake Island (Black Sea) Snake Island (Greek Φιδονήσι "Fidonísi"), also known as Serpent Island (, , ), is an island located in the Black Sea, near the Danube Delta. The island is populated. A rural settlement of "Bile" was established in February 2007. The islet was part of border dispute between Romania and Ukraine in 2004–2009, during which Romania contested the technical definition of the island and borders around it. The territorial limits of the continental shelf around Snake Island were delineated by the International Court of Justice in 2009. Snake Island is an igneous rock formation located 35 km