The Wadden Sea – unique in the world! The Wadden Sea stretches along the coasts of the Netherlands, Germany and Denmark and is an unequalled dynamic landscape. Nowhere in the world will you find such an expansive and varied area created under the influence of ebb and flood, where changes are noticeable daily. An extensive system of large and small channels alternates with sand flats which are exposed at low tide. It consists of mussel beds, sandbars, mudflats, salt marshes, estuaries, beaches and dunes and the occasional sea-grass meadows. This variety of landscapes makes the Wadden Sea a unique habitat, enjoyed by numerous visitors all year round. The Wadden Sea is an indispensable stopover for millions of birds per annum. It is also home to more than 10.000 often rare plant and animal species. The Dutch and German Wadden Sea has been a World Heritage site since 2009. In 2014, the Danish part was added, which means the Wadden Sea is now a World Heritage site in its entirety.