The common bottlenose dolphin (T. truncatus), is found in most tropical to temperate oceans; color is grey, with the shade of grey varying among populations; it can be bluish-grey, brownish-grey, or even nearly black, and is often darker on the back from the rostrum to behind the dorsal fin.
The common bottlenose dolphin (T. truncatus)
The Indo-Pacific bottlenose dolphin (T. aduncus), lives in the waters around India, northern Australia, South China, the Red Sea, and the eastern coast of Africa; the back is dark-grey and the belly is lighter grey or nearly white with grey spots
The Indo-Pacific bottlenose dolphin (T. aduncus) The Burrunan dolphin (T. australis), found in the Port Phillip and Gippsland Lakes areas of Victoria, Australia, was described in September 2011 after research showed it was distinct from T. truncatus and T. aduncus.
The Burrunan dolphin (T. australis)
The following are sometimes recognized as subspecies of T. truncatus:
- The Pacific bottlenose dolphin (T. gillii or T. truncatus gillii), lives in the Pacific, and has a black line from the eye to the forehead.
- The Black Sea bottlenose dolphin (T. truncatus ponticus), lives in the Black Sea.
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