From UPSC perspective, the following things are important :
Prelims level : Irrawaddy Dolphins
Mains level : Not Much
146 Irrawaddy dolphins were recently sighted in Chilika Lake of Odisha. The lake has highest single lagoon population of the aquatic mammal in the world.
- IUCN Status: Endangered
- Scientific Name: Orcaella brevirostris
- Habitats: Lakes, Rivers, Estuaries, and Coasts
- The Irrawaddy dolphin is a euryhaline species of oceanic dolphin found in discontinuous subpopulations near sea coasts and in estuaries and rivers in parts of the Bay of Bengal and Southeast Asia.
- They are also found in coastal areas in South and Southeast Asia, and in three rivers: the Ayeyarwady (Myanmar), the Mahakam (Indonesian Borneo) and the Mekong.
- The total population of these aquatic mammals in the world is estimated to be less than 7,500.
- Of these, more than 6,000 Irrawaddy dolphins have been reported from Bangladesh, while the dolphin distribution in Chilika is considered to be the highest single lagoon population.