The Wadden Sea is an intertidal zone in the southeastern part of the North Sea. It lies between the coast of northwestern continental Europe and the range of low-lying Frisian Islands, forming a shallow body of water with tidal flats and wetlands. It has a high biological diversity and is an important area for both breeding and migrating birds. In 2009, the Dutch and German parts of the Wadden Sea were inscribed on UNESCO's World Heritage List and the Danish part was added in June 2014.
Wadden Sea
Salt marsh and mudflats in Westerhever, Germany
The mudflats of the Pilsumer Watt near Greetsiel, Germany
Harbor seals on Terschelling, Netherlands
The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium and France. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than 970 kilometres (600 mi) long and 580 kilometres (360 mi) wide, covering 570,000 square kilometres (220,000 sq mi).
North Sea
The German North Sea coast
The Afsluitdijk (Closure-dike) is a major dam in the Netherlands
Zuid-Beveland, North Sea flood of 1953