The greatest attraction of this park stretching along the Baltic Sea coast (between Rowy and Łeba) are the shifting sand dunes, which, as they move, uncover dead tree stumps - the fossilized remains of forests once growing here. The biggest dune rises to 42 meters above sea level.
The lakes of Łebsko and Gardno are an important refuge for aquatic birds. Various plant colonies in the Słowiński National Park are of special interest. They range from the dune and pioneer plant species on the sandy beaches to the typical coastal pinewood and marsh plants in the numerous peat bogs and on the lakeshores. The park is inhabited by a number of rare bird species including the white tailed eagle, the eagle owl, cormorant, the black stork, and many species of aquatic birds.
The park has been recorded on the UNESCO list of World Biosphere Reserves. It is also under the protection of the RAMSAR International Convention.