The Common Wadden Sea Secretariat (CWSS) was established in 1987 and is located in Wilhelmshaven, Germany. The Wadden Sea Board supervises the performance of the CWSS.
The legal status and the functions and rulings of the CWSS are stipulated in the Administrative Agreement concluded between the Danish Ministry of the Environment, German Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety and the Dutch Ministry of Economic Affairs. Each Ministry finances a third of its budget. The working language of the Trilateral Cooperation and the CWSS is English.
- coordinates, promotes and supports activities of the Cooperation;
- is responsible for the preparation and production of documents for ministerial conferences, meetings of the Wadden Sea Board (WSB) and trilateral work groups;
- collects and evaluates information on monitoring, protection and the ecological condition of the entire Wadden Sea;
- is the central contact for the UNESCO Wadden Sea World Heritage;
- produces and publishes reports by the Cooperation;
- involves the public in the protection of the entire Wadden Sea area through communications, awareness building and environmental education.