The Amazon river dolphin, also known as the pink river dolphin or boto, lives only in freshwater. It is found throughout much of the Amazon and Orinoco river basins in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela.

Yes, the Amazon River is home to the unique Amazon River Dolphin (Inia geoffrensis), famously known as the "Boto" or Pink River Dolphin. Unlike ocean dolphins, these freshwater creatures are born gray and turn pink as they age, a coloration influenced by their diet, exposure to sunlight, and even scar tissue from rough play. They are the largest freshwater dolphins in the world, growing up to 9 feet long. Their biology is perfectly adapted to the rainforest; they have unfused neck vertebrae that allow them to turn their heads 90 degrees to maneuver through submerged tree trunks during the annual flooding. While they are generally shy and often seen alone or in mother-calf pairs, they are culturally significant in Amazonian folklore, where legends claim they can transform into handsome men at night to seduce villagers. Despite their mythical status, they are an endangered species, facing threats from dam construction, pollution, and being accidentally caught in fishing nets.