- West Frisian Islands — the Dutch Wadden islands, of which five are inhabited.
- Province of Friesland — western part of the Dutch mainland Wadden Sea coast.
- Province Groningen — eastern part of the Dutch mainland Wadden Sea coast.
- State of Lower Saxony
- Lower Saxon Wadden Sea National Park
- East Frisian Islands — including seven inhabited islands.
- State of Hamburg
- Hamburg Wadden Sea National Park — including the tiny island of Neuwerk.
- State of Schleswig-Holstein
- Region of Southern Denmark (South Jutland)
- Wadden Sea National Park
- Danish Wadden Sea Islands, including Fanø and Rømø