Until recently, Dr. Steven Campana was a Senior Scientist at the Bedford Institute of Oceanography, where he worked for the past 32 years as the head of both the Otolith Research Laboratory and the Canadian Shark Research Laboratory. There he directed an active research program on the population dynamics of sharks and other fishes, with particular emphasis on the development of new technologies in support of age determination, stock discrimination and fish tracking. Dr Campana is now working as a Professor at the University of Iceland, where he leads several multinational projects on age determination, stock discrimination and the overall status and health of fish populations.