Anastasios Tselepides is a biological oceanographer and Professor at the Department of Maritime Studies of the University of Piraeus as well as a Research Director at the Hellenic Centre for Marine Research in Crete (HCMR-Crete). During the last 29 years he has been involved (in most cases as a senior partner or coordinator) in a variety of research projects, many of which were funded by the EU. His main scientific interests are: research on deep-sea ecosystems, productivity of marine ecosystems, climate change and its impact on the marineenvironment, structure and function of oligotrophic ecosystems, pelagic-benthic coupling mechanisms, benthic community structure and microbial diversity. He was the leader of the Oceanography Department of the Institute of Marine Biology of Crete (IMBC) that evolved into the HCMR-Crete from 1993-2006. He was also the President of the Scientific Council of IMBC from 1998-2003. Most of his work has focused on the functioning of the Mediterranean Sea but he has also worked in the Pacific and AtlanticOceans.