Male chimp, Kalema, is photographed at the Ngamba Island Chimpanzee Sanctuary in Lake Victoria, Uganda. Kalema is a happy and playful individual when among the younger chimps, although he is the biggest in the group. He doesn’t enjoy the rough and tumble of the older males. He can be quite shy and is often seen sitting and observing the activity around him from a distance. 03/15 Julia Cumes/IFAW