The three peninsulas in southern Europe and Sicily, Sardinia and Corsica divide the Mediterranean Sea into several small sea areas: Goulias Sea, tyrrhenian sea, Adriatic Sea, Ionian Sea and Aegean Sea.
The Mediterranean plays an important role in transportation and strategy. It can reach the Atlantic Ocean via the Strait of Gibraltar in the west, the Black Sea via the Turkish Strait in the northeast and the Red Sea to the Indian Ocean via the Suez Canal in the southeast. It is an important waterway between Europe, Asia and Africa, and also an important channel to communicate between the Atlantic Ocean and the Indian Ocean. The important coastal seaports are Gibraltar (Britain), Marseille (France), Genoa, Naples (Italy), Split, Rijeka (Croatia), Duras (Albania), Algiers (Algeria), Port Said (Egypt) and so on.
Although there are many rivers flowing into the Mediterranean, such as Nile, Rhone and Ebro, etc., due to the subtropical zone, the evaporation is too large, far exceeding the supply of river water and rainwater, which makes the water income in the Mediterranean less expensive and the salinity of seawater much higher than that in the Atlantic Ocean. The water from the Atlantic Ocean flows into the Mediterranean Sea from the upper layer of the Gibraltar Strait, while the high salt water from the Mediterranean Sea flows out from the lower layer of the Strait, such as the Atlantic Ocean. The Atlantic Ocean is very big and there is plenty of water. The amount of clean water flowing into the Mediterranean Sea is very large, up to 7000 cubic meters per second. Without the continuous water supply from the Atlantic Ocean, the Mediterranean will dry up and become a huge salt pit in about 1000 years.
To the north of the Mediterranean is the European continent, to the south is the African continent and to the east is the Asian continent. It is about 4,000 kilometers long from east to west, 1.800 kilometers wide from north to south, and covers an area of 25 1.6 million square kilometers. It is the largest land ocean in the world. The western Mediterranean is connected with the Atlantic Ocean through the Strait of Gibraltar, and the eastern Mediterranean is connected with the Black Sea through the Turkish Strait (Da Daniil Strait and Bosporus Strait, Marmarahi). The Suez Canal was opened in19th century, connecting the Mediterranean Sea and the Red Sea. The Mediterranean Sea is the oldest ocean in the world, and its history is even older than the Atlantic Ocean. The Mediterranean Sea is located at the junction of Eurasia and Africa, but it is one of the strong earthquake regions in the world. There are Mount Vesuvius and Mount Etna in the Mediterranean region. As an inland sea, the Mediterranean Sea is relatively calm, with winding coastline, numerous islands and many natural harbors, and has become a traffic artery connecting three continents.
Under such conditions, the Mediterranean maritime trade has flourished since ancient times and has become the cradle of ancient Egyptian civilization, ancient Greek civilization and Roman Empire. Now it is also one of the important places of maritime traffic in the world. Phoenicians, Cretes, Greeks, and later Portuguese and Spanish are all countries with developed maritime industry. Famous navigators such as Columbus, Da Gama, Magellan, etc. All people come from Mediterranean countries. The Mediterranean coast is hot and dry in summer and warm and humid in winter, which is called the Mediterranean climate. Because of this climate, olive trees and other kinds of trees grow along the coast. The vegetation along the Mediterranean coast is dominated by evergreen shrubs, with hard leaves, waxy leaves and deep roots, which have the characteristics of drought tolerance and adaptation to dry and hot summer climate. This is the main subtropical fruit producing area in Europe, rich in citrus, figs and grapes, as well as woody oil crops olive.
The Mediterranean is also the largest land sea (inland sea) and the dirtiest sea in the world.