*4.1.2 Dolphins*

• Families Delphinidae (the oceanic dolphins) (**Figure 2**) [2]

*Introductory Chapter: Marine Mammals of the World DOI: http://dx.doi.org/10.5772/intechopen.105110*

**Figure 1.** *Types of whales in the world.*

**Figure 2.** *Types of dolphins in the world.*

	- Bottlenose dolphin
	- Common dolphin
	- La Plata dolphin (disambiguation) dolphin,

40 species of dolphins within the Delphinidae, 6 are commonly called whales, including the killer and also the pilot whales.

Most dolphins are small, measuring 3 meters (10 feet) long, and have spindleshaped bodies, beaklike snouts (rostrums), and easy needlelike teeth. a number of these cetaceans are occasionally called porpoises.
