Diversity and zoogeography / A.R. Martin and R.R. Reeves -- The evolution of marine mammals / J.E. Heyning and G.M. Lento -- Anatomy and physiology: the challenge of aquatic living / T.M. Williams and G.A.J. Worthy -- Neural morphology / I.I. Glezer -- Sensory systems / G. Dehnhardt -- Vocal anatomy, acoustic communication and echolocation / P.L. Tyack and E.H. Miller -- Patterns of movement / P.T. Stevick, B.J. McConnell and P.S. Hammond -- Feeding ecology / W.D. Bowen, A.J. Read and J.A. Estes -- Energetics: consequences for fitness / I.L. Boyd -- Life history and reproductive strategies / D.J. Boness, P.J. Clapham and S.L. Mesnick -- Population genetic structure / A.R. Hoelzel, S.D. Goldsworthy and R.C. Fleischer -- Ecology of group living and social behaviour / R.C. Connor -- Problem solving and memory / R.J. Schusterman and D. Kastak -- Conservation and management / R.R. Reeves and P.J.H. Reijnders.