AdvertisementDolphins Recognize The Calls Of Long-Lost FriendsAugust 07, 2013Rhitu ChatterjeefacebookEmailKai, seen here at age 16 at the Texas State Aquarium, recognized the whistle of another dolphin, Hastings, who he'd shared a tank with for years before the experiment. Kai is now 20. (Courtesy of Jason Bruck)
