In the freshwaters ofriver Ganga, a variety of dolphins named ______ are found

The Ganges River Dolphin (Platanista gangetica) is locally known as "Susu" because of the noise it makes while breathing. This species is unique because it is essentially blind; it hunts by emitting ultrasonic sounds that bounce off of fish and other objects, enabling it to "see" in the murky river water through echolocation.