Cover -- Copyright -- Contents -- Contents by Subject Area -- Contributors -- Preface to the Second Edition -- Preface to the First Edition -- Guide to the Encyclopedia -- A -- Abundance Estimation -- Aerial Behavior -- Age Estimation -- Aggressive Behavior, Intraspecific -- Albinism -- Amazon River Dolphin (Inia geoffrensis) -- Ambergris -- Anatomical Dissection: Thorax and Abdomen -- Antarctic Fur Seal (Arctocephalus gazella) -- Antarctic Marine Mammals -- Archaeocetes, Archaic -- Arctic Marine Mammals -- Atlantic Spotted Dolphin (Stenella frontalis) -- Atlantic White-Sided Dolphin (Lagenorhynchus acutus) -- Australian Sea Lion (Neophoca cinerea) -- Australian Snubfin Dolphin (Orcaella heinsohni) -- Azorean Whaling -- B -- Baculum -- Baiji (Lipotes vexillifer) -- Balance -- Baleen -- Baleen Whales (Mysticetes) -- Barnacles -- Basilosaurids -- Beaked Whales, Overview (Ziphiidae) -- Bearded Seal (Erignathus barbatus) -- Behavior, Overview -- Beluga Whale (Delphinapterus leucas) -- Biogeography -- Blubber -- Blue Whale (Balaenoptera musculus) -- Bones and Teeth, Histology of -- Bottlenose Whales (Hyperoodon ampullatus and H. planifrons) -- Bowhead Whale (Balaena mysticetus) -- Bow-Riding -- Brain -- Brain Size Evolution -- Breathing -- Breeding Sites -- Bryde's Whales (Balaenoptera edeni/B. brydei) -- Burmeister's Porpoise (Phocoena spinipinnis) -- Bycatch -- C -- California, Galapagos, and Japanese Sea Lions (Zalophus californianus, Z. wollebaeki, and Z. japonicus) -- Callosities -- Captive Breeding -- Captivity -- Caspian and Baikal Seals (Pusa caspica and Pusa sibirica) -- Cephalorhynchus Dolphins (C. heavisidii, C. eutropia, C. hectori, and C. commersonii) -- Cetacean Ecology -- Cetacean Evolution -- Cetacean Fossil Record -- Cetacean Life History -- Cetacean Prenatal Development -- Circulatory System -- Classification (Overall) -- Climate Change -- Clymene Dolphin (Stenella clymene) -- Coloration -- Common Bottlenose Dolphin (Tursiops truncatus) -- Common Dolphins (Delphinus delphis and D. capensis) -- Communication in Marine Mammals -- Competition with Fisheries -- Conservation Efforts -- Crabeater Seal (Lobodon carcinophaga) -- Culture in Whales and Dolphins -- Cuvier's Beaked Whale (Ziphius cavirostris) -- D -- Dall's Porpoise (Phocoenoides dalli) -- Delphinids, Overview -- Dental Morphology, Evolution of -- Desmostylia -- Dialects -- Diet -- Distribution -- Diving Behavior -- Diving Physiology -- Dugong (Dugong dugon) -- Dusky Dolphin (Lagenorhynchus obscurus) -- E -- Eared Seals (Otariidae) -- Earless Seals (Phocidae) -- Echolocation -- Ecological Effects of Marine Mammals -- Ecology, Overview -- Elephant Seals (Mirounga angustirostris and M. leonina) -- Endangered Species and Populations -- Endocrine Systems -- Energetics -- Entrapment and Entanglement -- Estrus and Estrous Behavior -- Ethics and Marine Mammals -- Extinctions, Specific -- F -- False Killer Whale (Pseudorca crassidens) -- Feeding Morphology -- Feeding Strategies and Tactics -- Female Reproductive Systems -- Filter Feeding -- Fin Whale (Balaenoptera physalus) --T$