How many seas in the world? This question always causes keen interest among students. The world ocean is considered to be the water shell of the globe that surrounds the mainland, as well as the islands. Some water areas separated by land or elevations of the underwater relief are conventionally called seas. It’s not easy to say exactly how many seas there are in the world, because there are many different classifications. The total number of water bodies may vary: for example, the Aral Sea, the Dead Sea, the Caspian Sea and the Sea of Galilee are commonly called seas, although in fact they should be classified as Lakes. There are also a number of bays that would be more logical to be ranked as seas.
Separation of water bodies can be carried out depending on where they are located. Small-scale seas, which are part of larger ones, are often not taken into account. For example, in the Mediterranean Sea there are seven inland facilities. That is, you can freely cross the ship from one to another, but the ship will remain within the Mediterranean Sea.
Distinguish between internal, intercontinental, marginal, inter-island objects. There is a classification according to the degree of salinity and water temperature. Therefore, to accurately answer the question of how many seas in the world will fail.
There are five oceans on Earth. To each of them, certain seas are conventionally reckoned. Such large objects as the Bering, Yellow, Okhotsk, Japan, East China, and South China Sea belong to the Pacific Ocean .
The Atlantic includes the Baltic, North, Sargasso, Marmara, Ionian, Aegean, Adriatic and many other seas. There are about thirty of them.
The Indian Ocean includes only six seas. The largest of them is Red.
The Arctic Ocean subjugates thirteen seas. Among them are White, Barents, Chukchi, Kara, East Siberian.
Far from all scientists recognize the Southern Ocean. However, it contains water bodies that surround Antarctica.
In order to say how many seas in the world, you can use the latest data from the International Geographic Bureau. Today there are fifty-four of them. Inland seas and bays were not taken into account.
Mediterranean
Leading scientists and international organizations for the protection of nature believe that today the most dirty sea in the world is the Mediterranean. This conclusion was made by the UN in a recent annual report. For various reasons, about half a thousand tons of oil products fall into the Mediterranean waters annually. Of particular danger to the flora and fauna are the numerous plastic wastes that clog the coastal territories.
Baltic
The sad glory of the Mediterranean water element is also shared by the Black and Baltic Seas. The most problematic area is the Gulf of Finland, which is filled with spilled oil products. Due to the fact that the Baltic Sea is surrounded on all sides by economically developed countries (Sweden, Norway), they drain a significant amount of industrial effluents into its waters. Multi-ton industrial waste from European countries also flows into the Black Sea through flowing rivers.
Marble
The most dangerous sea in the world is the Marmara Sea. It is at the same time the smallest. It serves as the border between Europe and Asia and is a connecting link between the Black and Aegean Seas. Many centuries ago, a fault formed in the earth's crust, which was subsequently filled with water. So the Sea of Marmara arose , the depth of which reaches in some places more than a thousand three hundred meters.
The danger in this water area is represented by numerous natural disasters: tsunamis and earthquakes. Over the entire known history of the existence of the sea, its waters shook about three hundred times.
In the classification of world water bodies there is also an approach in which the seas are categorized according to the degree of salinity of the water. The world's oceans are filled with various salts that have fallen into it from previously eroded rocks. The total content of solids dissolved in one kilogram of water is usually called salinity. Its level is expressed in ppm (tenths of a percent).
Red
The most salty seas of the world are Dead and Red. One liter of red sea water contains forty grams of salt. Due to the constant mixing of water layers between themselves, the Red Sea has the same temperature and salinity level in any part of it.
At the end of the last century, researchers discovered over two dozen depressions containing hot "brines." The average temperature in them is forty degrees. This water is very healthy.
Dead
The Dead Sea is famous for its unique composition of water and healing mud. A high degree of salinity creates a high fluid density.