A dynamic landscape with an open connection to the sea and fresh water makes the National Park a special place with diverse flora and fauna. When the tide of the sea is high, the whole tracts of land disappear under water, but at low tide the land dries again. This place is home to thousands of birds as well as a lot of animals. Moreover, when it is sunny you can notice seals sunbathing! We recommend going to Oostrerchelde in the summer because at this time you can also go snorkelling and join the seals for a sunbathing session.