Preface -- Acknowledgments -- Contents -- Executive Summary -- 1 Introduction -- 2 Sources of Sound in the Ocean and Long-Term Trends in Ocean Noise -- 3 Effects of Noise on Marine Mammals -- 4 Modeling and Databases of Noise in the Marine Environment -- 5 Findings and Recommendations -- References -- Appendix A Committee and Staff Biographies -- Appendix B Acronym List -- Appendix C Examples of Underwater Acoustics Noise Models -- Appendix D Research Recommendations from Previous NRC Reports (1994, 2000) -- Appendix E Glossary of Terms -- Appendix F Biological Terms -- Color Plates.