The Wadden Sea is one of the largest tidal areas in the world and has been declared a UNESCO World Heritage Site.
The area runs from den Helder to the Danish Esbjerg and changes completely twice a day due to the tide. This makes the area unique, one moment the area consists of mudflats and the next everything is underwater. The plants and animals in this area have had to adapt to the changeable conditions and unpredictable weather. During the previous ice age this area was above water, at the beginning of the warmer period the North Sea was filled with water and large waves and the wind formed a sandbank along the coast. With extensive peat swamps beyond. Over thousands of years, the sandbank was interrupted and the area behind it slowly filled up and grew into an inland sea that we now know as the Wadden Sea.