1 Some Recent Uses and Potentials of Radiotelemetry in Field Studies of Cetaceans.- I. Introduction.- II. Radio Tracking from Aircraft and Satellites.- III. Shore Station Monitoring.- IV. Radiotelemetry and Coordinated Environmental Sampling.- V. Multiple Animal Radio Tracks.- VI. Methods for Attaching Radio Transmitter Packages.- VII. Summary and Recommendations.- References.- 2 Identification of Humpback Whales by Fluke Photographs.- I. Introduction.- II. Methods.- III. Results.- IV. Discussion.- V. Summary.- References.- 3 The Natural History of Dall's Porpoise in the North Pacific Ocean.- I. Introduction.- II. Taxonomic Considerations.- III. Distribution and Population Shifts.- IV. Predators.- V. Coloration.- VI. Parasites and Commensals.- VII. Feeding Habits.- VIII. Morphology.- IX. Reproduction.- X. Behavior.- XI. Discussion and Conclusions.- References.- 4 The Northern Right Whale Dolphin Lissodelphis borealis Peale in the Eastern North Pacific.- I. Introduction.- II. Distribution, Seasonal Movement, and Abundance.- III. Herd Sizes.- IV. Herd Configuration.- V. Interspecific Associations.- VI. Swimming Behavior.- VII. Sound Production.- VIII. Strandings.- IX. Coloration.- X. Reproduction.- XI. Food Habits.- XII. Parasitism.- XIII. Morphometrics.- References.- 5 The Natural History of the Bottlenose Whale, Hyperoodon ampullatus Forster.- I. Introduction.- II. Distribution.- III. Behavior.- IV. Feeding.- V. Reproduction.- VI. Age and Growth.- VII. Summary.- References.- 6 The Socioecology of Humpback Dolphins (Sousa sp.).- I. Introduction.- II. The Study Area.- III. Methods.- IV. Statistical Analysis of Results.- V. The Dolphins.- VI. Results.- VII. Discussion.- References.- 7 Social Organization in Sperm Whales, Physeter macrocephalus.- I. Introduction.- II.Composition of Population.- III. Composition of Groupings.- IV. Ontogeny of Schooling Behavior.- V. Geographical Distribution of Groupings.- VI. Migrations.- VII. Social Organization and Its Development.- VIII. Implications for Management.- References.- 8 Behavior and Significance of Entrapped Baleen Whales.- I. Introduction.- II. Ice Entrapment.- III. Net Entrapments.- IV. Techniques of Measuring, Tagging, and Release.- V. Significance and Summary.- References.- 9 The Vocal and Behavioral Reactions of the Beluga, Delphinapterus leucas, to Playback of Its Sounds.- I. Introduction.- II. Materials and Methods.- III. Results.- IV. Discussion.- References.- 10 The Whistle Repertoire of the North Atlantic Pilot Whale (Globicephala melaena) and Its Relationship to Behavior and Environment.- I. Introduction.- II. Materials and Methods.- III. Results.- IV. Discussion.- V. Summary.- References.- 11 The Whistle of the Atlantic Bottlenosed Dolphin (Tursiops truncatus)-Ontogeny.- I. Introduction.- II. Literature Review.- III. Methods.- IV. Equipment.- V. Differences in Whistles by Age Class.- VI. Analyses of Whistles of Individual Infants.- VII. Summary and Discussion.- References.- 12 Mysticete Sounds.- I. Introduction.- II. Methods.- III. Species Accounts.- IV. Miscellaneous Sounds.- V. Discussion.- References.