Part A Introduction - Life History and Ecology: Life history strategies of marine mammals, P.G.H. Evans, I. Stirling; How persistent are marine mammal habitants in an ocean of variability?, A. Bjorge; Ecological aspects of reproduction of marine mammals, C. Lockyer. Part B Sensory Systems and Behaviour: Sound and cetaceans, J. Gordon, P. Tyack; Behavioural ecology of cetaceans, J.R. Boran, et al; New perspectives on the behavioural ecology of pinnipeds, H.L. Cappozzo. Part C Survey and Study Techniques: Assessment of marine mammal population size and status, P.S. Hammond; Acoustic techniques for studying cetaceans, J. Gordon, P. Tyack; Applications of molecular data in cetacean taxonomy and population genetics with special emphasis on defining species boundaries in cetaceans, M.C. Milinkovitch, et al. Part D Health, Parasites and Pathogens: Marine mammal health - Holding the balance in an everchanging sea, J.R. Geraci, V. Lounsbury; Living together - the parasites of marine mammals, F.J. Aznar, et al; Marine Mammal mass mortalities, M. Domingo, et al. Part E Conservation & Management: Interactions between aquatic mammals and humans in the context of ecosystem management, E.A. Crespo, M. Hall; Environmentalists, fishermen, cetaceans and fish - Is there a balance and can science help to find it? M. Hall, G.P. Donovan; Organohalogenated contaminants in marine mammals, A.J. Hall; Cetaceans and humans - influences of noise, B. Wursig, P.G.H. Evans. (Part contents).