The body color of this dolphin is limited to fairly gray to slate blue , the lower part is pale in color and there is no different pattern that causes discrepancy. In the middle of the back there are small and round surface fins. Head high , round , beak absent. The front of the body is blunt in nature. The specimens obtained in Borneo are similar to those of Finless Purpice , Neophocaena phocaenoides , with no fins on the posterior side. Humpback dolphins , Sousa chinensis are relatively large , surface fins and beak and large.