"All scientists and students who study marine mammals should read it.the book contains a wealth of information. - Frank E. Fish, Department of Biology, West Chester University in ANIMAL BIOLOGY .".a crucial resource spanning many disparate research venues.Each chapter provides extensive references for further research." - Peggy Dominy in E-STREAMS .

".highly welcome.the authors succeed again in presenting a book that is simultaneously challenging and easily readable for students." - M. S. Fischer, Jena, in JOURNAL OF ZOOLOGICAL SYSTEMATICS AND EVOLUTIONARY RESEARCH .".will certainly be popular with students, because it is clearly and concisely written, and intelligently illustrated.

" - in CAMBRIDGE UNIVERSITY PRESS .".it is a thorough, precise and clearly written reference that will admirably serve those interested in the evolution of marine mammals." - Corey J.A. Bradshaw, School for Environmental Research, Charles Darwin University, in POLAR RESEARCH.