Main Page | See live article | Alphabetical index The cetacean family Monodontidae comprises two unusual whale species, the Narwhal, in which the male has a long tusk, and the white Beluga. The taxonomy of these aquatic mammals follows: Taxonomy ORDER CETACEA Suborder Mysticeti Family Eschrichtiidae: Gray Whale Family Balaenopteridae: rorquals Family Balaenidae right whales Family Neobalaenidae: Pygmy Right Whale Suborder Odontoceti Family Platanistoidae: river dolphins Family Delphinidae: oceanic dolphins Family Phocoenidae: porpoises Family Monodontidae Beluga, Delphinapterus leucas Narwhal, Monodon monoceros Family Physeteridae: Sperm Whale Family Kogiidae: Pygmy Sperm Whale and Dwarf Sperm Whale Family Ziphiidae: beaked whales This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.