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Marine Mammals Information Database ：Illustrated Guide of Marine Mammals
Irrawaddy dolphin
Scientific Name : Orcaella brevirostris / Japanese Name : kawa-gondou
Details
| Order | Cetartiodactyla |
|---|---|
| Suborder | Odontoceti |
| Family | Delphinidae |
| Genus | Orcaella |
| Species | brevirostris |
| Subspecies | - |
| Subtype | - |
| CITES Appendix | I | IUCN RedData Status | Vulnerable |
|---|---|---|---|
| Baleen plates or tooth-Upper jaw | 8-19 (average15) | Baleen plates or tooth-Lower jaw | 11-18 (average13-14) |
| At birth | At weaning | Adult | Adult male | Adult female | |
|---|---|---|---|---|---|
| Body length | about 1m | - | 1.73-2.75m | - | - |
| Body weight | 10-12kg | - | 115-130kg | - | - |
| Feature and Habit |
|---|
| A blunt head with no beak suggests some similarity with the finless porpoise and the white whale, but they have a dorsal fin around the center, although it is fairly small. The body color is a little brownish gray, with the ventral side somewhat lighter. They can spit water with a flexible mouth. Their cervical vertebrae are not fused, an exceptional case among delphinid dolphins, and their neck is adjustable. Marine type are known from; India, Bangladesh, Myanmar, Thailand, Indonesia, Cambodia, and the Philippines. They are also known in large rivers such as Ayeyarwady and Mekong rivers. They are known to cooperate with fishers in netting a shoal in the Ayeyarwady river. |
| Description |
| Type specimen was reported to be collected in Vizagapatam, which is very western end of the whole distributary area. |
| Stranding Record(s) in Japan |
| No records exist. Map ▼ |
Marine Mammals Skull Database
A click on the skull thumb nail will bring you to detailed images.
| Sex | - | Reproductive Condition | - |
|---|---|---|---|
| Body length | - | Locality | - |
| Museum No. | - | Other No. | - |
