黑海是欧洲东南部和亚洲小亚细亚半岛之间的陆间海,是世界上最大的内陆海,因水色深暗、多风暴而得名。其海面约46.1万平方公里,最深处2210米。黑海海岸很少低地,大部分低地都在北岸。注入黑海的大河流有多瑙河、聂伯河、聂斯特河和顿河。作为世界上最大的不完全混合水体,黑海的表层和下层水体是两个截然不同的世界。距黑海水面220米之下约占总水量90%的水体都极度缺氧,被 The Black Sea is the inter-continental sea between southeastern Europe and Asia Minor in Asia. It is the largest inland sea in the world, named after the dark, stormy waters. The sea is about 461,000 square kilometers, the deepest 2210 meters. The Black Sea coast is seldom low and most of the lowlands are on the north shore. Into the Black Sea, the rivers Danube, Dnieper, River and Don River. As the world’s largest and incompletely mixed body of water, the surface and lower bodies of the Black Sea are two distinct worlds. 220 meters away from the surface of the Black Sea about 90% of the total water volume are extremely hypoxic, was