The Wadden Sea (Waddenzee) is one of the world’s most extraordinary and productive coastal ecosystems — a UNESCO World Heritage tidal flat system stretching 500 kilometres along the coasts of the Netherlands, Germany, and Denmark, where 10–12 million migratory birds stop each year to refuel on one of the planet’s greatest avian migration highways. This vast intertidal zone of mudflats, sandbanks, salt marshes, and barrier islands is the largest unbroken system of tidal wetlands on Earth and offers a unique visitor experience: walking on the sea floor itself during low tide — an activity known as wadlopen (mudflat hiking) — is one of the most memorable nature experiences in the Netherlands.

Quick Facts: The Wadden Sea, Netherlands

• Best time to visit: Spring (April–May) and autumn (September–October) for peak bird migration; summer for mudflat hiking (wadlopen) excursions; the Frisian Islands are a popular summer beach destination for Dutch and German holidaymakers
• Top activity: Wadlopen — guided mudflat walks from the mainland to one of the Wadden Islands, typically 3–4 hours walking across the exposed sea floor at low tide. This is strictly a guided activity — the tides are dangerous and the mud can be treacherous if you don’t know the routes
• How to get there: The Wadden Sea coast is accessible from numerous points in the northern Netherlands (provinces of Friesland and Groningen); ferries connect to the Wadden Islands (Texel, Vlieland, Terschelling, Ameland, and Schiermonnikoog)
• UNESCO status: Inscribed in 2009 (Netherlands and Germany) and extended in 2014 to include the Danish section — one of the largest UNESCO natural World Heritage sites

Waddenzee is a unique natural habitat in the north part of the Netherlands. It is situated on the Dutch coast from Den Helder to the mouth of the river Ems. Waddenzee is a coastal plain that becomes the sea twice a day and twice daily remains moist land. It is a large unique biosphere reserve covering an area of approximately 2500 km2. Waddenzee is bounded on the northwest with islands that this country protects against shock waves from the North Sea. This allowed the creation of the most varied ecosystem on Earth.

Approximately every 12 hours influx and outflow of the North Sea are repeated. Thanks to this fact, there are many diverse species of fauna and flora living here, such as mussels, snails, starfish, seals and many migratory birds.

When a shoal dries, it makes the Waddenzee the popular tourist area. In the Waddenzee, there are many guides that you can follow for hiking and never go alone as the flora and fauna is protected. Waddenzee is in UNESCO World Heritage List since 2009.

View Waddenzee – a unique natural habitat in Netherlands in a larger map

Have you walked the Wadden Sea mudflats or visited the Dutch Wadden Islands? Share your wadlopen and Dutch coastal experiences in the comments! 🦅

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