Jean-François Samain, PhD Biochemistry and Enzymology (University of Orsay, Paris) and Docteur Es Sciences Biological Oceanography (University of Brest), began his scientific career in marine ecology and then focused on functional physiology of cultivated mollusk species at Ifremer (French Research Institute for Exploitation of the Sea). In 2000, he became director and coordinator of Morest, a multidisciplinary network created to investigate the origins of Crassostrea gigas summer mortality from the molecular to the ecosystem level.