The Boto, or Amazon River Dolphin (Inia geoffrensis) is a freshwater or river dolphin. It is most commonly seen in the Amazon River. Other names for it are Amazon Dolphin, Boto Vermelho, Bouto, Bufeo, Dauphin de l'Amazone, Inia, Pink Dolphin, Pink Freshwater Dolphin, Pink Porpoise, and Tonina.
... it has many elevation shifts, tight corners, and a narrow course that makes it perhaps the most demanding and probably one of the most dangerous tracks still in ...