Testing will determine whether DNA belongs to the 11-year-old who was swimming in the Black Jungle Swamp. She was with three other children -- two girls ages 7 and 10, and a boy, 12, authorities said.

As you come out of the rainforests you then hit the water’s edge and you see capybaras, tapirs and guanaco,” Liz Wilson, curator of Jaguar Jungle Swamp and Primates at Audubon Zoo said.