ORDER CETACEA

COMMENTS: The definition of oceanic water masses follows Briggs (1974). Includes as suborders Mysticeti ( Balaenidae, Balaenopteridae, Eschrichtiidae, and Neobalaenidae) and Odontoceti ( Delphinidae, Monodontidae, Phocoenidae, Physeteridae, Platanistidae, and Ziphiidae).