Vadehavet (Wadden Sea). 14/05/87; Region Syddanmark; 151,080 ha; 55°16'N 08°32'E. Natura 2000 SPA; Nature Conservation Areas, Scientific Reserve, Wildlife Reserve. The Danish Wadden Sea area is characterized by tidal mud and sandflats, saltmarshes, brackish and freshwater marshland and arable land. The entire Wadden Sea is one of the worlds most productive wetlands with an outstanding rich bottom fauna including vast mussel beds. The area is an important nursing habitat for several fish species of the North Sea as well as for internationally important numbers of seals and waterbirds, of which various species use the site for breeding, wintering and staging, notably Ciconia ciconia, Calidris alpine schinzii and Philomachus pugnax. Ramsar Site Number: 356. Most Recent RIS Information: 2012.

The "Wadden Sea" Transboundary Ramsar Site was declared in 2015 and it includes 13 Ramsar Sites in Denmark, Germany and the Netherlands: Site No. 356 in Denmark; Sites No. 501, 537, 80, 81, 82 in Germany; Sites No. 1252, 289, 2212, 2213, 2214, 2215, 2216 in the Netherlands.