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
Zoo Tycoon 2: Endangered Species Zoo Tycoon 2: Endangered Species Zoo Tycoon 2: Endangered Species is the first of the "Zoo Tycoon 2" expansion packs (The others are "", "", the downloadable "" and ). It gives the player 20 new animals, some of them are rare, such as the Florida Panther and the koala, as well as giving the player new innovations such as sky trams, Jeep rides, elevated paths and several new campaigns and challenges. With the addition of this expansion pack, the player can create a Jeep Wrangler or Jeep Commander tour through the zoo's exhibits. The new sky tram routes allow