Dr. Christoph Waldmann is a senior scientist at the Center for Marine Environmental Sciences (MARUM) at Bremen University. He has been involved in the development and operation of deep-sea instruments and methods since his diploma degree in the Physics Department at Kiel University. During the last few years he contributed to the European ocean observatory as part of the EC funded projects ESONET, HYPOX and EMSO as WP leader and as a member of the steering committees.