Geographical Location of Black Sea 

• The Black Sea, also known as the Euxine Sea, is one of the major water bodies and a famous inland sea of the world. 
• This marginal sea of the Atlantic Ocean, located between Eastern Europe and Western Asia. 
• It is surrounded by the Pontic, Caucasus, and Crimean Mountains in the south, east and north respectively. 
• The Turkish straits system - the Dardanelles, Bosporus and Marmara Sea - forms a transitional zone between the Mediterranean and the Black Sea. 
• The Black Sea is also connected to the Sea of Azov by the Strait of Kerch. 
• The bordering countries of Black Sea are: Russia, Ukraine, Georgia, Turkey, Bulgaria and Romania. 

 Anoxic Water: 

• There is a significant absence of oxygen in the water. 
• The Black Sea happens to be the largest water body with a meromictic basin, which means the movement of water between the lower and upper layers of the sea is a rare phenomenon to find anywhere in the world. 
• The anoxic condition is also caused due to the presence of the process of Eutrophication in the sea.