This site contains a map that shows the names and locations of four of the five makor oceans of the world. There are about 80 species of cetaceans, a classification that included whales, dolphins and porpoises. Among these 80 species, there are 32 species of whales.
Whales are aquatic mammals.
Toothed and Baleen Whales Scientist recognize more than 70 species of whales. These two groups of whales differ from each other in several ways. The name refers to the series of baleen plates in gums along each side of the whale's upper jaw. This page shows a labelled diagram of a typical toothed whale. The orca is used as the example.