🐬Irrawaddy dolphin
The Irrawaddy dolphin is a euryhaline species of oceanic dolphin found in scattered subpopulations near sea coasts and in estuaries and rivers in parts of the Bay of Bengal and Southeast Asia. It closely resembles the Australian snubfin dolphin, which was not described as a separate species until 2005. It has a slate blue to a slate gray color. Although found in much of the riverine and marine zones of South and Southeast Asia, the only concentrated lagoon populations are found in Chilika Lake in Odisha, India, and Songkhla Lake in southern Thailand.
Text: Wikipedia, CC BY-SA 4.0.
IUCN Red List assessment, 2017.
- Body mass
- 190 kg
- Body length
- 2.63 m
- Shoulder height
- not recorded
- Top speed
- not recorded
- Bite force
- not recorded
- Maximum lifespan
- 30 years
Everything we know about the Irrawaddy dolphin
Typical adult figures. Where a value is an estimate rather than a measurement, it says so.
Body mass190 kgCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 190 kgAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Body length2.63 mCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 2.75 mSeaLifeBasev25.04
Maximum lifespan30 yearsCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 30 yearsAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Generation length15 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Age at maturity5.0 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Gestation1.2 yearsCOMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 1.2 yearsAnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Litter size1COMBINEOther figures ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Figures vary
- 1AnAgeAnAge build 15, 2023-07-03 (HAGR)data quality: acceptable
Trophic levelCarnivoreCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Activity cycleCrepuscular / mixedestimatedCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Population density37 per km²COMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Volume l190 LaverageDetails ↓Hide ↑
Body mass at ~1.0 kg/L, the density of vertebrate tissue.
estimated = a model's estimate for a species nobody has measured; average = a mean across sexes or species in a group.
Not recorded for Irrawaddy dolphin yet: shoulder height, top speed, bite force.
Family tree
- kingdomAnimalia
- ›phylumChordata
- ›classMammalia
- ›orderCetacea
- ›familyDelphinidae
- ›genusOrcaella
- ›speciesOrcaella brevirostris
- classMammals · Mammalia
- orderEven-toed hoofed animals · Artiodactyla
- infraorderWhales & dolphins · Cetacea
- genusOrcaella
All 15 branches ↓Fewer branches ↑
- kingdomMetazoa
- phylumChordata
- subphylumCraniata
- subphylumVertebrata
- superclassGnathostomata
- superclassSarcopterygii
- superclassTetrapoda
- classMammals · Mammalia
- subclassTheria
- superorderLaurasiatheria
- orderEven-toed hoofed animals · Artiodactyla
- suborderWhippomorpha
- infraorderWhales & dolphins · Cetacea
- familyDelphinidae
- genusOrcaella
More about the Irrawaddy dolphin
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