At first sight, the sea looks like any other on this morning. A few small waves roll onto the shore, but the water is otherwise calm. A couple of birds glide gently across the beach, on which a handful of people are enjoying a morning walk. However, if you come back five hours later, quite a different sight awaits you: the water will have disappeared - completely.
We are in Sønderjylland’s westernmost corner, where the Wadden Sea creates up a wonderful natural boundary to the much fiercer North Sea. The Wadden Sea is known for its powerful tides, with high tide and low tide separated by intervals of around 6 hours. In this area, the sea level can vary by up to 1.80 metres, which is the reason why some stretches of coastline are sometimes completely dry, whilst they are flooded at other times of the day.