The Mediterranean Sea is named because it lies between Asia, Europe and Africa. Turks and Greeks distinguish the Black Sea, sometimes called the White Sea. Our ancient book "A Generation Beyond the Ridge" called it "Western Food Sea". The Mediterranean Sea is about 4,000 kilometers long from east to west, 1.800 kilometers wide from north to south, and covers an area of 25 1.2000 square kilometers (including Marrakech, but excluding the Black Sea). It is the largest land sea in the world. It connects the Atlantic Ocean to the west via the Strait of Gibraltar, the Black Sea to the northeast via the Turkish Strait, and the Red Sea to the southeast via the Suez Canal. It is an important traffic artery connecting the Atlantic Ocean and the Indian Ocean, and is called the maritime transportation hub. The Mediterranean Sea, bounded by the Apennine Peninsula, the Tunisian Strait between Sicily and Tunisia, is divided into two parts, the east and the west, with an average depth of1.450m and the deepest point of 5267m.. The deepest point on record is the Ionian basin in southern Greece. High salinity, up to 39.5‰. The Mediterranean Sea is also the oldest ocean in the world, and its history is even older than that of the Atlantic Ocean. The Mediterranean shipping company is developed and is an important water area connecting southern European countries with Asia, Europe and Africa.