The Irrawaddy dolphin is a dolphin found in the coastal areas of South and Southeast Asia, as well as the Ayeyarwardy, Mahakam, and Mekong rivers. They are easily identifiable by their bulging forehead, stubby beak, and 12-19 teeth on each side of both jaws. The Mekong River Irrawaddy dolphins in particular inhabit a 118-mile stretch of the river between Cambodia and Lao PDR and are quite scarce - with only between 78 to 91 dolphins estimated to still exist.