List of cetaceans
Updated: 5/20/2026, 8:10:06 PM Wikipedia source
Cetacea is an infraorder that comprises the 94 species of whales, dolphins, and porpoises. It is divided into toothed whales (Odontoceti) and baleen whales (Mysticeti), which diverged from each other in the Eocene some 50 million years ago (mya). Cetaceans are descended from land-dwelling hoofed mammals, and the now extinct archaeocetes represent the several transitional phases from terrestrial to completely aquatic. Historically, cetaceans were thought to have descended from the wolf-like mesonychians, but cladistic analyses confirm their placement with even-toed ungulates in the order Cetartiodactyla. Whale populations were drastically reduced in the 20th century from intensive whaling, which led to a moratorium on hunting by the International Whaling Commission in 1982. Smaller cetaceans are at risk of accidentally getting caught by fishing vessels using, namely, seine fishing, drift netting, or gill netting operations.
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Tables
| Genus Balaena Linnaeus, 1758 – one species | ||||||
| Common name | Scientific name | IUCN Red List status | Global population estimate | Range | Size | Picture |
| Bowhead whale | Balaena mysticetus Linnaeus, 1758 | LC IUCN | 43,000 | | 60 t (66 short tons) | |
| Genus Eubalaena Gray, 1864 – three species | ||||||
| Common name | Scientific name | IUCN Red List status | Global population estimate | Range | Size | Picture |
| North Atlantic right whale | Eubalaena glacialis Müller, 1776 | CR IUCN | 350 | | 40–80 t (44–88 short tons) | |
| North Pacific right whale | Eubalaena japonica Lacépède, 1818 | EN IUCN | 404–2,108 | | 60–80 t (66–88 short tons) | |
| Southern right whale | Eubalaena australis Desmoulins, 1822 | LC IUCN | 13,600 | | 40–80 t (44–88 short tons) | |
| Genus Balaenoptera – nine species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Blue whale | Balaenoptera musculus Linnaeus, 1758 | EN IUCN | 5,000–15,000 | | 50–150 t (55–165 short tons) | |
| Bryde's whale | Balaenoptera brydei Olsen, 1913 | LC IUCN | 90,000–100,000 | | 14–30 t (15–33 short tons) | |
| Eden's whale | Balaenoptera edeni Anderson, 1879 | LC IUCN | Unknown | | Unknown | |
| Common minke whale | Balaenoptera acutorostrata Lacépède, 1804 | LC IUCN | 200,000 | | 2–4 t (2 –4 short tons) | |
| Rice's whale | Balaenoptera ricei Rosel et al., 2021 | CR IUCN | 30–100 | | ~13 t (15 short tons) | |
| Fin whale | Balaenoptera physalus Linnaeus, 1758 | VU IUCN | 100,000 | | 30–80 t (33–88 short tons) | |
| Omura's whale | Balaenoptera omurai Wada et al., 2003 | DD IUCN | Unknown | Unknown | Unknown | |
| Sei whale | Balaenoptera borealis Lesson, 1828 | EN IUCN | 80,000 | | 20–25 t (22–28 short tons) | |
| Antarctic minke whale | Balaenoptera bonaerensis Burmeister, 1867 | NT IUCN | 515,000 | | 6–10 t (6 –11 short tons) | |
| Genus Megaptera Gray, 1846 – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Humpback whale | Megaptera novaeangliae Borowski, 1781 | LC IUCN | 84,000 | | 25–30 t (28–33 short tons) | |
| Genus Eschrichtius Gray, 1864 – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Gray whale | Eschrichtius robustus Lilljeborg, 1861 | LC IUCN | 21,000 | | 15–40 t (17–44 short tons) | |
| Genus Caperea Gray, 1864 – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Pygmy right whale | Caperea marginata Gray, 1846 | LC IUCN | Unknown | | 3–3 t (3 –3 short tons) | |
| Genus Aethalodelphis Galatius et al., 2025– two species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Dusky dolphin | Aethalodelphis obscurus Gray, 1828 | LC IUCN | Unknown | | 100 kg (220 lb) | |
| Pacific white-sided dolphin | Aethalodelphis obliquidens Gill, 1865 | LC IUCN | 1,000,000 | | 85–150 kg (187–331 lb) | |
| Genus Cephalorhynchus Gray, 1846 – six species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Peale's dolphin | Cephalorhynchus australis Peale, 1848 | LC IUCN | Unknown | | 115 kg (254 lb) | |
| Hourglass dolphin | Cephalorhynchus cruciger Quoy & Gaimard, 1824 | LC IUCN | 140,000 | | 90–120 kg (200–260 lb) | |
| Chilean dolphin | Cephalorhynchus eutropia Gray, 1846 | NT IUCN | Unknown | | 60 kg (130 lb) | |
| Commerson's dolphin | Cephalorhynchus commersonii Lacépède, 1804 | LC IUCN | 22,000 | | 35–60 kg (77–132 lb) | |
| Heaviside's dolphin | Cephalorhynchus heavisidii Gray, 1828 | NT IUCN | Unknown | | 40–75 kg (88–165 lb) | |
| Hector's dolphin | Cephalorhynchus hectori Van Beneden, 1881 | EN IUCN (subspecies Maui dolphin CR IUCN) | 7,381 (subspecies Maui dolphin 57–75 in 2016) | | 35–60 kg (77–132 lb) | |
| Genus Delphinus – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Common dolphin | Delphinus delphis Linnaeus, 1758 | LC IUCN | Unknown | | 70–150 kg (150–330 lb) | |
| Genus Feresa – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Pygmy killer whale | Feresa attenuata Gray, 1875 | LC IUCN | Unknown | | 160–350 kg (350–770 lb) | |
| Genus Globicephala – two species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Long-finned pilot whale | Globicephala melas Traill, 1809 | LC IUCN | Unknown | (green) | 1 –3 t (2 –3 short tons) | |
| Short-finned pilot whale | Globicephala macrorhynchus Gray, 1846 | LC IUCN | Unknown | (dark blue) | 1–4 t (1 –4 short tons) | |
| Genus Grampus – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Risso's dolphin | Grampus griseus G. Cuvier, 1812 | LC IUCN | Unknown | | 300 kg (660 lb) | |
| Genus Lagenodelphis – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Fraser's dolphin | Lagenodelphis hosei Fraser, 1956 | LC IUCN | Unknown | | 209 kg (461 lb) | |
| Genus Lagenorhynchus Gray, 1846 – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| White-beaked dolphin | Lagenorhynchus albirostris Gray, 1846 | LC IUCN | 100,000 | | 180 kg (400 lb) | |
| Genus Leucopleurus Gray, 1866 – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Atlantic white-sided dolphin | Leucopleurus acutus Gray, 1828 | LC IUCN | 200,000–300,000 | | 235 kg (518 lb) | |
| Genus Lissodelphis – two species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Northern right whale dolphin | Lissodelphis borealis Peale, 1848 | LC IUCN | 400,000 | | 115 kg (254 lb) | |
| Southern right whale dolphin | Lissodelphis peronii Lacépède, 1804 | LC IUCN | Unknown | | 60–100 kg (130–220 lb) | |
| Genus Orcaella Gray, 1866 – two species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Australian snubfin dolphin | Orcaella heinsohni Beasley, Robertson & Arnold, 2005 | VU IUCN | 9,000–10,000 | | 130–145 kg (287–320 lb) | |
| Irrawaddy dolphin | Orcaella brevirostris Gray, 1866 | EN IUCN | 78–102 | | 130 kg (290 lb) | |
| Genus Orcinus – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Orca | Orcinus orca Linnaeus, 1758 | DD IUCN | 100,000 | | 4 t (5 short tons) | |
| Genus Peponocephala – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Melon-headed whale | Peponocephala electra Gray, 1846 | LC IUCN | Unknown | | 225 kg (496 lb) | |
| Genus Pseudorca – one species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Genus Inia – two species | ||||||
| Common name | Scientific name | Status | Population | Distribution | Size | Picture |
| Amazon river dolphin | Inia geoffrensis Blainville, 1817 | EN IUCN | Unknown | | 150 kg (330 lb) | |
| Araguaian river dolphin | Inia araguaiaensis Hrbek, Da Silva, Dutra, Farias, 2014 | NE | Unknown | Araguaian river dolphin in blue | 150 kg (330 lb) | |
References
- The Society for Marine Mammalogy considers Eden's whale a smaller morph of the more widespread Bryde's whale based on cu
- Total population unknown but thought to be locally common – it is the most common dolphin found around the Falkland Isla
- Population estimated to be in the low thousands at the highest.
- There are estimated to be at least several million common dolphins worldwide, but several large portions of its range ha
- The only population estimate is of 38,900 individuals in the eastern tropical Pacific Ocean.
- Total population is not known. There are estimated to be in excess of 200,000 in the Southern Ocean. The North Atlantic
- Total population not known. There are 150,000 individuals in the eastern tropical Pacific Ocean. There are estimated to
- The population around the continental shelf of the United States has been recorded to be in excess of 60,000. In the Pac
- There are estimated to be at least 320,000 Fraser's dolphins worldwide, but several large portions of its range have not
- Estimates of various stocks throughout the North Atlantic give an overall value into the high tens or low hundreds of th
- Varying population estimates for areas around California and the North Pacific give a total of up to 400,000
- Surveys suggest this is the most common dolphin off of Chilean waters
- Local estimates include 70–80,000 in the Antarctic, 8,000 in the tropical Pacific (although tropical waters are not the
- Estimates for eastern tropical Pacific are 45,000 and another recent survey estimates population to be 1,200 for the eas
- The total population is unknown. The eastern Pacific was estimated to have in excess of 40,000 individuals and is probab
- Population estimated to be in the low tens of thousands
- As of November 2021, the Araguaian river dolphin is not recognized by the Society for Marine Mammalogy, which cites smal
- No global population estimates have been made. One survey estimated a population of about 11,000 in the eastern Pacific
- No global population estimates have been made. One survey estimated a population of about 11,000 in the eastern Pacific
- A survey from November–December 2006 failed to find any individuals. Another survey, from 1997, counted only 13 individu