The Irrawaddy dolphin (Orcaella brevirostris), found in discontinuous subpopulations near sea coasts and in estuaries and rivers in parts of the Bay of Bengal and Southeast Asia, is a singular-looking dolphin, whose body differs from the stereotype of the best-known dolphins.It is closely related to the Orca (Orcinus orca), and it is one of the most threatened extant dolphins.

The body of this dolphin is very robust. It has a rounded head and a very bulging forehead that extends from above the mouth. This dolphin lacks a beak, and since its neck is very flexible, it has wrinkles behind the head as a result of this capability.

It is a carnivorous cetacean that feeds on several species of cephalopods, fish, crustaceans and fish eggs. It establishes a strategy of cooperation in groups composed of 6-15 dolphins.

The low reproduction rate (one single offspring after a gestation period of 14 months) and the human-related threats contribute to the rapid decline of the Irrawaddy dolphin populations and the danger of extinction in some areas hence the Whale and Dolphin Conservation (WDC) organization created an Operation Plan for the Conservation of the Irrawaddy Freshwater Dolphin Populations given the potential extinction problem in Southeast Asia.

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