The Wadden Sea (Wattenmeer) on the south side of Wangerooge is a UNESCO World Heritage Site and one of the richest intertidal habitats in Europe. At low tide, the mudflats extend for kilometres towards the mainland, and guided walks across them are one of the best things to do on the island. Local guides lead groups out across the exposed seabed, explaining the ecology — lugworms, cockles, shrimp, and the extraordinary diversity of shorebirds that depend on the area for food and rest.
Autumn migration, from August to October, is the best time for birdwatching: tens of thousands of waders, geese, and ducks stop on the island and the surrounding flats during their journeys south. The national park status means the Wadden Sea side of the island is strictly managed — follow the marked paths and do not disturb nesting areas. Guided walks depart from the village; check times and book through the tourist office.