The pink river dolphin, also known as the Amazon river dolphin, is a freshwater dolphin found primarily in the rivers and lakes of the Amazon Basin. They are known for their distinctive pink coloration, which can vary from light gray to bright pink, especially in males. These dolphins can grow up to 2.5 meters (8.2 feet) in length and are known for their playful behavior and intelligence. Pink river dolphins have a unique adaptation to their riverine habitat, including a flexible neck that allows them to navigate through submerged vegetation. They primarily feed on fish, crustaceans, and other aquatic animals. As a vulnerable species, they face threats from habitat loss, pollution, and fishing activities.