Water six seas wash the territory of Russia from the north.All of them belong to the Arctic Ocean.Five of the seas - Kara, Laptev, East Siberian, Barents, Chukchi - Polar, located between 70 and 80 north latitude and are mainland - marginal.They are limited to the waters of the islands and archipelagos of the Arctic Ocean.Sixth - the White Sea - the interior.It is located just south, crossing the Arctic Circle.

6 Total area of ​​the northern seas of 4.5 million square kilometers.Laptev Sea, a fascinating part of the Nansen Basin is the deepest.The maximum depth of 3385m, average - 533m.Most parts of the Arctic sea ice is present all year round.The individual arrays are stored in the pack i
ce throughout the summer.The exception is the Barents Sea.In winter, the ice-free is its western part.In summer, the ice melts.

the east territory of Russia is washed by the Pacific seas - Bering, Okhotsk and Japan.They are located south of the Arctic, more extensive and deep.From each other, they are separated by the Kamchatka Peninsula and Sakhalin Island.To the east of the waters of the Kuril limited and the Japanese islands.The biggest and deep - Bering Sea.Its maximum depth - 4151m, -1640m average.Okhotsk - the most shallow of them.Its maximum depth - 3521m, the average - 821. All the Eastern semi-Sea.Water exchange takes place through the straits between the islands and archipelagos of the Pacific basin.

Black, Azov and Baltic - Sea of ​​the Atlantic Ocean.All of them are internal and protrude deeply into the land.Black Sea - the warmest of seas surrounding the territory of Russia.According to the hypothesis, expressed even by Pliny the Elder, 7500 years ago, the Black Sea is a deep freshwater lake.Its level was significantly lower than it is now.With the end of the ice age, global sea level has risen.The Black Sea basin and the adjacent large areas were flooded.The greatest depth of the Black Sea 2210m average - 1240. A characteristic feature is the almost complete absence of life at a depth of 150-200m, due to the high degree of saturation of the lower layers of water with hydrogen sulfide.

Baltic - the western sea, which washes the shores of Russia.From the Atlantic Ocean it separates the Scandinavian Peninsula.Water exchange takes place through the straits.Shallow, maximum depth of 470m, the average - 51. The characteristic feature is the very small level of the tides.

Azov sea - semi-enclosed, communication with the ocean through the Kerch Strait and the Black Sea.The most shallow in the world.The maximum depth of 13m, average - 7.

Caspian - thirteenth Sea washes the shores of Russia, the largest inland waters of the planet.Not reported oceans, and, in fact, is a lake.However, the composition of the water and by the way, what kind of animals live there, it can be attributed to the seas.About 50 million years ago, it was part of a huge body of water, also includes the Black and Mediterranean seas.The last 30 million years due to the global ocean was lost and restored several times.Currently, the level of the Caspian Sea is unstable, prone to periodic fluctuations, the cause of which has not been established.