Explanation:

Irrawaddy Dolphin is not a true river dolphin, but an oceanic dolphin that lives in brackish water near coasts, river mouths and in estuaries in South and Southeast Asia. It is slaty blue to slatygray throughout, with the underparts slightly paler. It is identified by a bulging forehead, a short beak. It has established subpopulations in freshwater rivers, including the Ganges and the Mekong, as well as the Irrawaddy River from which it takes its name. Its habitat range extends from the Bay of Bengal to New Guinea and the Philippines. They do not appear to venture off shore. Protection Status: IUNC has classified it as Vulnerable in Red Data list. They were in news because Odisha has conducted survey of Irrawaddy Dolphins.