Noun
toothed whales: dolphins; porpoises; sperm whales; beaked whales
Source: WordNetClick here for more information. main Porpoises are a group of fully aquatic marine mammals that are sometimes referred to as mereswine, all of which are classified under the family Phocoenidae, parvorder Odontoceti (toothed whales). Source: Internet
The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have split apart around 34 million years ago. Source: Internet