Table of Contents

Family Otariidae (Eared Seals) Family Odobenidae (Walrus) Family Phocidae (Earless Seals) Family Balaenidae (Right and Bowhead Whales) Family Neobalaenidae (Pygmy Right Whale) Family Eschrichtiidae (Gray Whale) Family Balaenopteridae (Rorquals) Family Physeteridae (Sperm Whale) Family Kogiidae (Pygmy and Dwarf Sperm Whales) Family Ziphiidae (Beaked Whales) Family Platanistidae (South Asian River Dolphin) Family Iniidae (Amazon River Dolphins) Family Lipotidae (Baiji) Family Pontoporiidae (Franciscana) Family Monodontidae (Narwhal and Beluga) Family Delphinidae (Ocean Dolphins) Family Phocoenidae (Porpoises) Family Trichechidae (Manatees) Family Dugongidae (Dugong)