However, the fight against the illegal ivory trade is like squeezing a balloon — when gains are made in one area, such as Tanzania, the killings intensify in another spot, like Mozambique's Niassa reserve to the south, which is linked to the Selous by a wildlife corridor. In this picture, a team of wildlife veterinarians use a 4x4 vehicle and a rope to turn over a tranquilized elephant in order to attach a GPS tracking collar and remove the tranquilizer dart. (Photo | AP)