Evidence found
297 records across 8 countries and territories, 1852–2026.
Orcaella brevirostris · GBIF taxon key 2440460
Where has the Irrawaddy dolphin been recorded?
Orcaella brevirostris occurrence evidence comes from 297 records in 8 countries and territories, from 1852 to 2026. Most records come from Bangladesh.
- 297 records
- 8 places
- 14 years recorded
- Mammalia class
Observation evidence passport
Source coverage
CC0 GBIF Animalia occurrence facets, including country, month and year summaries.
Refreshed 2026-09-23. Inspect the taxon on GBIF.
What this means
The species has been recorded in the listed places in the stated source universe. Peak month: January.
1 month reach at least 10% of the peak facet count.
What this does not mean
repeated describes the record pattern, not a formal range, residency, abundance or conservation assessment.
A single record remains evidence of a recording, not proof that a population lives there.
Compare this animal’s observation pattern
When it is recorded
JFMAMJJASOND
Peak month: January. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.
Records over time
18522026
Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.
Where Irrawaddy dolphin has been recorded
The countries below show where occurrence evidence exists for Irrawaddy dolphin. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.
| Place | Records | Share |
|---|---|---|
| Bangladesh | 282 | |
| Vietnam | 5 | |
| Malaysia | 3 | |
| Australia | 2 | |
| Cambodia | 2 | |
| Indonesia | 1 | |
| India | 1 | |
| Thailand | 1 |
Related animals
Others in the family Delphinidae.
common bottlenose dolphin
18,058 records
orca
12,965 records
pantropical spotted dolphin
2,528 records
Spinner Dolphin
1,761 records
long-finned pilot whale
1,363 records
Striped Dolphin
813 records
Commerson's dolphin
126 records
Indian Ocean bottlenose dolphin
117 records
Record pattern: repeated
Repeated records across many years and months. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.
Repeated records across many years and months. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.