A diverse algal flora consisting of over 70 species is present. Various rare and endemic fish species occur at the site. Due to the combined impacts of nutrient-enrichment, groundwater abstraction, and virtually unregulated hunting, the site was put on the Montreux Record in 1993. Lake Shabla . Two brackish, coastal lakes connected by an artificial canal.
Limestone forms huge karst fields in parts of the wetland.
The site supports various species of breeding birds and endemic birds and the endangered plants Cladium mariscus, Nuphar lutea, Nymphaea alba. The wetlands serve as water supply for domestic and industrial use, agriculture irrigation, fishing, angling and livestock grazing. Bordering Romania, the site includes a freshwater lake on the Danube River floodplain, extensive reedbeds and several scarce marshland plants. An important area for numerous species of breeding, wintering and staging waterbirds, including important numbers of geese and ducks. A natural history museum and field station are located at the site.