Amazon River Dolphin Evolution

The amazon river dolphin (Inia geoffrensis) is a species of freshwater river dolphin that lives in the Amazon River. Some evolutionary quirks are that it has unfused neck vertebrae to aid head turns, large fins to allow maneuverability, long stiff beaks to search through sediment for food. Echolocation also helps them do this, as does their good eyesight. They also have a varietal diet, feeding on over fifty types of fish. Thousands of years in the future, the dolphin will evolve to a new creature called the Shade Dolphin (Inia Umbracornis). It will be named that because it may become more nocturnal due to rising temperatures. It also may develop a smaller body to navigate shallower waters, better toxin filtration by the liver and kidneys, and lower metabolic rates to go longer without food. It also may cooperate more with other dolphins for greater benefit.