The Yangtze River Dolphin, also known as the baiji, is a freshwater dolphin native to the Yangtze River in China. It is characterized by its long, slender body, a rounded forehead, and a pale blue-gray color. The baiji is known for its unique adaptations to river life, including a flexible neck that allows it to navigate through the river's complex environment. Once abundant, the Yangtze River Dolphin has faced severe threats due to habitat loss, pollution, and overfishing. As a result, it is considered critically endangered, with some estimates suggesting that it may be functionally extinct. Conservation efforts are ongoing to protect this species and its habitat.