Sobieszewo Island has a diverse landscape due to its location. Sea proximity and river estuary cause that flora and fauna are vibrant.
Here you will find dunes, meadows, fields, ponds, lakes, reeds, canals, and pine and mixed forests on the island. There are not only 500 different plant species but also many different animals and birds. There live roe-deer, boars, racoons, beavers and seals. On the island live about 300 species of birds. Because of that, there are two ornithological reserves.