Common Wadden Sea Secretariat

The Common Wadden Sea Secretariat (CWSS) is the coordinating body of the Trilateral Wadden Sea Cooperation (TWSC). Located in Wilhelmshaven, the Secretariat was founded in 1987 by the Wadden Sea states Denmark, Germany, and the Netherlands.

The Secretariat

  • 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.

Additionally, CWSS is the secretariat of the Wadden Sea Seals Agreement, the first regional Agreement to be concluded under the auspices of the Convention on the Conservation of Migratory Species of Wild Animals (CMS). Since the inscription of the Wadden Sea on the UNESCO World Heritage List, the Secretariat moreover deals with the implementation of the obligations derived from the UNESCO World Heritage Convention.

The legal status and the functions of and regulations governing CWSS are stipulated in the Administrative Agreement concluded between the Danish, Dutch and German Ministries responsible for the Wadden Sea. Each Ministry finances a third of its budget. The working language of the Trilateral Cooperation and the CWSS is English.


Our team

Rüdiger Strempel

Executive Secretary, Head of the Secretariat

Tel: +49 4421 9108 12

Sascha Klöpper

Deputy Executive Secretary, Ecosystem Management

Tel: +49 4421 9108 14

Dr Harald Marencic

Deputy Executive Secretary, Wadden Sea World Heritage

Tel: +49 4421 9108 15

Gerold Lüerßen

Deputy Executive Secretary, Trilateral Monitoring and Assessment

Tel: +49 4421 9108 16

Anja Domnick

Project Officer, Sustainable Tourism Strategy

Tel: +49 4421 9108 24

Dr Julia A. Busch

Programme Officer, Emerging Issues, Science and Data Management

Tel: +49 4421 9108 13

Dr. Soledad Luna

Programme Officer, Wadden Sea World Heritage Management Plan

Tel: +49 4421 9108 22

Annika Bostelmann

Communications and Outreach Officer

Tel: +49 4421 9108 19

Anke Rottmann

Administrative and Finance Officer

Tel: +49 4421 9108 11

Stefanie Fifelski

Administrative and Finance Officer

Simone Goth

Administrative Assistant

Tel: +49 4421 9108 17

Heidi Bayer

Finance Assistant

Tel: +49 4421 9108 23