Do dolphins have fins?

The dolphin body typically has five fins (some dolphins have only a small dorsal ridge while others, such as the "killer whale" have a very large dorsal fin). ... Blood vessels are generally not close to the surface of the dolphin's skin, except in the case of the pectoral and dorsal fins and the flukes. read more

The fins on a dolphin, whale, shark, basically all marine life, have evolved in such a way as to exemplify their strengths. A dolphins strength is to be fast and agile. read more

Dorsal Fin. The dolphin body typically has five fins (some dolphins have only a small dorsal ridge while others, such as the "killer whale" have a very large dorsal fin). The dorsal fin, located on the top (dorsal side) of the animal, is filled with a fibrous connective tissue. read more

The tail fin, or fluke, is used for propulsion through the water. The pectoral fins (on each side) provide directional control and the dorsal fin (in those species that have one) provides stability whilst swimming. read more