There are many species of dolphin. To most people they do look much alike. We know that they are very intelligent and like to be in the presence of Man, even if it is only following boats
A new species has been identified off northern Australia. It could have always been there or moved there from somewhere else. They are in the "hump" class, having a raised portion below the dorsal fin.
Scientists are treating the dolphin as a new species which makes three species of Indo-Pacific humpback. There are four kinds of humpback in total including the eastern Atlantic type, Sousa teuszil.
Apparently, naming of the "new" species is a complex process based on the previously used naming practice, behavior of the animal itself and its habitat.
Discovery of the northern Australian dolphin came about by the first intense study into the humpback genus. It involved examination of 180 skulls and 235 tissue samples.
Evolution by Ty Buchanan