Bottlenose Dolphins (Tursiops truncatus) are intelligent, charismatic mammals found in tropical oceans and other warm waters around the globe. These sleek swimmers can reach speeds of over 18 miles an hour. They surface often to breathe, doing so two or three times a minute. Bottlenose dolphins travel in social groups and communicate with each other by a complex system of squeaks and whistles. Schools have been known to come to the aid of an injured dolphin and help it to the surface.