Natural monument (1947), reserve (1980). Elongated in a northeasterly direction Lake Donuzlav has a large area and is the deepest lake in the Crimea.
In its origin Donuzlav is a bay, separated from the sea by 9-kilometer bay bar with the width of 200-600 m.
The lake is salty. In the upper layers it is so narrow and shallow that it resembles a river; here its water is much desalinated by spring water.
Therefore, in the upper Donuzlav unusual for plain Crimea wetland vegetation develops here.
References: Ena V.G. Protected landscapes of the Crimea. - Simferopol: Tavria, 1989.