Durankulak the lake is the area under the protection of, 15 km North from the town of Shabla and close to the Bulgarian-Romanian border. According to the Order of the Council of Ministers from February 1980 she officially designated as a protected area. The lake area of about 447 hectares is one of the best preserved coastal areas in Bulgaria. The task of this area - save over 260 rare species of flora and fauna encountered on Durankulak the lake, and to protect them from extinction.

In Durankulak the lake there are 12 species of mammals, 23 species of fish, 7 species of amphibians and 5 reptiles. This lake is considered the only place in Bulgaria where wild carp is a proven fact. In addition, Durankulak the lake is really important for the protection of birds. In this area is a migration route Via Pontica, which makes this area suitable for tourism in the field of ornithology. Around the lake has about 256 species of birds, including 92 - nesting birds. The lake is home to species such as little bittern, lesser grey Shrike, ferruginous duck, sea Plover, etc.

Durankulak officially named as the lake Ramsar site, as there are three species overwinter water intensive birds. For example, white-fronted goose, Mallard, red-breasted goose, and, in addition, rare species such as pygmy cormorant and white Pelican.

Natural object "Durankulak lake and its surroundings are protected, but access here is free. Tourists should adhere to the established rules.