Common Wadden Sea Secretariat

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.

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.




Bernard Baerends
Executive Secretary

Tel: +49 4421 9108 12

Sascha Klöpper
Deputy Executive Secretary, Management and Monitoring

Tel: +49 4421 9108 14

Dr Harald Marencic
Deputy Executive
Wadden Sea World

Tel: +49 4421 9108 15

Gerold Lüerßen
Programme Officer,
Flyway and Biodiversity

Tel: +49 4421 9108 16

Anja Domnick
Project Officer,

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

Heidi Bayer
Finance Assistant

Tel: +49 4421 9108 23