The Yangtze River dolphin, also known as the baiji, is a freshwater dolphin native to the Yangtze River in China. It is known for its pale blue-gray color and long, slender body. The baiji is one of the most endangered dolphin species, primarily due to habitat loss, pollution, and fishing activities. Efforts to conserve the Yangtze River dolphin have been challenging, as the population has drastically declined over the years. The last confirmed sighting of a baiji in the wild was in 2002, leading scientists to believe it may be functionally extinct. Conservationists continue to advocate for the protection of the Yangtze River ecosystem to support remaining wildlife.