It is impossible to fall in love with these amazing creatures. It is considered that the dolphins are related to the porpoises and the whales, but there are 40 species of dolphins worldwide. They are originating from terrestrial mammals whose ancestors went in the water 50,000,000 years ago.
Their body is streamlined so they can swim fast in the water and have control in their swimming with the tail. The dorsal fin provides stability in the swimming.
Their color is usually grey, and some different shades of grey with some lines or patches on the side below with lighter contrast. The dolphins don’t grow hair.