Answer:
According to some sources, there are 43 species of dolphins, 38 species of dolphins which belong to the family Delphinidae of oceanic dolphins and five species of river dolphins. However, during 2011 a new species, the Burrunan dolphin was discovered, increasing the number to 44.
Dolphin Species List
- Long-Beaked Common Dolphin, Delphinus capensis
- Short-Beaked Common Dolphin, Delphinus delphis
- Bottlenose Dolphin, Tursiops truncatus
- Indo-Pacific Bottlenose Dolphin, Tursiops aduncus
- Northern Rightwhale Dolphin, Lissodelphis borealis
- Southern Rightwhale Dolphin, Lissodelphis peronii
- Tucuxi, Sotalia fluviatilis
- Costero, Sotalia guianensi
- Indo-Pacific Hump-backed Dolphin, Sousa chinensis
- Indian humpback dolphin, Sousa plumbea
- Atlantic Humpbacked Dolphin, Sousa teuszii
- Atlantic Spotted Dolphin, Stenella frontalis
- Clymene Dolphin, Stenella clymene
- Pantropical Spotted Dolphin, Stenella attenuata
- Spinner Dolphin, Stenella longirostris
- Striped Dolphin, Stenella coeruleoalba
- Rough-Toothed Dolphin, Steno bredanensis
- Chilean Dolphin, Cephalorhynchus eutropia
- Commerson’s Dolphin, Cephalorhynchus commersonii
- Heaviside’s Dolphin, Cephalorhynchus heavisidii
- Hector’s Dolphin, Cephalorhynchus hectori
- Risso’s Dolphin, Grampus griseus
- Fraser’s Dolphin, Lagenodelphis hosei
- Atlantic White-Sided Dolphin, Lagenorhynchus acutus
- Dusky Dolphin, Lagenorhynchus obscurus
- Hourglass Dolphin, Lagenorhynchus cruciger
- Pacific White-Sided Dolphin, Lagenorhynchus obliquidens
- Peale’s Dolphin, Lagenorhynchus australis
- White-Beaked Dolphin, Lagenorhynchus albirostris
- Australian Snubfin Dolphin, Orcaella heinsohni
- Irrawaddy Dolphin, Orcaella brevirostris
- Melon-headed Whale, Peponocephala electra
- Killer Whale (Orca), Orcinus orca
- Pygmy Killer Whale, Feresa attenuata
- False Killer Whale, Pseudorca crassidens
- Long-finned Pilot Whale, Globicephala melas
- Short-finned Pilot Whale, Globicephala macrorhynchus
- Guiana dolphin, Sotalia guianensis
River Dolphins
- Boto (Amazon River Dolphin), Inia geoffrensis
- Chinese River Dolphin (Baiji), Lipotes vexillifer (considered functionally extinct)
- Ganges River Dolphin, Platanista gangetica gangetica
- La Plata Dolphin (Franciscana), Pontoporia blainvillei
- Indus River Dolphin, Platanista gangetica minor
New Species
Burrunan Dolphin, Tursiops australis