Zakaznik - temporarily protected natural water area, where certain types and forms of human economic activity are prohibited in order to ensure the protection of individual species of living organisms, biocenoses, biotopes, etc.

Natural reserves are water areas of special importance for the preservation or restoration of natural complexes or their components and maintenance of ecological balance.

To ensure the integrity of protected sites, certain economic activities, such as fishing, are prohibited in sanctuaries, while other activities that do not affect protected sites may be allowed (if the sanctuary is not complex).