The Irrawaddy dolphin is a not quite a River dolphin as its normal habitat lies near the coast and delta areas, it is found in river such as the Ganges, the Mekong and the Ayeyarwady River (Irrawaddy River) from where it gets its name. The Irrawaddy Dolphin has a lifespan of about 30 years and can reach about 130kg in weight and about 2.5m in length. It has a rounded head and a flat nose and is classified as a critically endangered species with only about 100 left in total. There are a few clusters of dolphins around the Laos / Cambodian border on the Lower Mekong, which can be seen by taking a kayaking tour.