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SECTION 3. BIOLOGICAL CHARACTERISTIC OF THE COASTAL ZONE AND BILOGICAL RESOURCES The problem of the preservation and use of the biological and landscape varieties has important meaning in the context of the tasks of supervision of the coastal spaces. This is bound with the fact that the biological variety is a natural base of the stable development on the local and regional levels; and is the base for supporting the stable exploitation of commercial biological resources as the base of the feeding of the population, development of the corresponding fields of industry and of the coastal infrastructure; totally defines the recreational qualities and attractiveness of the coastal regions; is a special genetic reserve of the region, bound with the presence of valuable, endemic and rare biological species. Besides, the presence of the system of the specifically protected natural resources (preserves, natural parks, and so on), that are the potential kernel of the natural regeneration of the degraded ecosystems, assists to stabilize the condition of the environment of the whole Caspian region. Big variety of places of habitation and mixture of species is characteristic for the Caspian Sea. The places of habitation are represented by wide river systems and deltas with their rich humid lowerings, huge vast reed-growing areas along the northern coast, quite fresh watered (108%) vast shallow areas of the Northern Caspian (about 25% of the whole square of the sea surface, but only 0,5 % of the whole volume), saltish (10-11%) and deeper regions of the Middle and Southern Caspian. The lists of above-ground species of the region include the salt-resistant desert plants, coastal birds, creating big populations and not numerous ground mammals. The Region of the Caspian sea is situated on the cross of the ways of migration of the millions of birds of passages. The water species include the freshwater fish, migrating fish that spawn in the rivers and fatten in the sea and the fish that lie only in the sea. Fish get used to the wide spectrum of ecological conditions. Sturgeon fish are the most famous ones among the fish adjusted to the significantly changing saltiness of the Caspian Sea. The species of sea birds are very different and their multiplicity is very high here, although some of the species belong to the rare and disappearing ones from the world’s ornithofauna. The Caspian seal is the wide spread trade specie. It reminds of possible ancient connections with the species of seals, that lived in the cold arctic waters.
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3.1. 
