Answer by
richard91 (107)
Whales belong to two main categories: Mysticeti (baleen whales) that don't have teeth, they filter water with baleens, and Odontoceti(toothed whales) that contain whales like the sperm whales, beaked whales, orca, dolphins, etc. As examples, Physeter macrocephalus (Sperm whale), Mesoplodon grayi( Grey's beaked whale), Orcinus orca (the killer whale), Delphinus delphis (the common short beaked dolphin).