South Asian river dolphin The sphincter-like structure is capable of sensing light, and may be able to sense the direction from where the light was emitted. However, the muddy waters, or low light conditions, that the "Platanista gangetica" inhabit negate the use of the little vision that remains. The Ganges subspecies shows object-avoidance behavior in both the consistently heavily murky waters of its habitat and in clear water in captivity, suggesting that it is capable of using echolocation effectively to navigate and forage for prey. However, there is limited information on how extensively vocalization is utilized between individuals. This subspecies of river dolphin is
Indian softshell turtle Indian softshell turtle The Indian softshell turtle ("Nilssonia gangetica"), or Ganges softshell turtle is a species of softshell turtle found in South Asia in rivers such as the Ganges, Indus and Mahanadi. This vulnerable turtle reaches a carapace length of up to . It feeds mostly on fish, amphibians, carrion and other animal matter, but also takes aquatic plants. The species is identified on the basis of the structure of the carapace and plastron. There are eight pairs of costal plates, the last well developed and in contact throughout on the median line; two neurals between the first pair of