The beautiful Irrawaddy Dolphin is severely threatened and is now functionally extinct in Laos.
The Irrawaddy dolphin is a euryhaline species of oceanic dolphins, i.e. they can tolerate a wide range of water salinity.
Though very similar to the beluga whale in appearance, Irrawaddy dolphins are most closely related to the killer whale (orca). They are characterized by a large melon, no distinct beak, and a blunt, rounded head.
Their bodies are light gray allover and slightly lighter underneath, although some individuals range from gray to dark slate blue. Also, it has long broad flippers and short, blunt, and triangular dorsal fins.