 Manatees are known to live in the vicinity, but despite searching the river and surrounding lakes, they fail to encounter the species in the wild.Carwardine takes Fry to INPA in Manaus, where captive manatees are kept for research.At Tefé, west of Manaus, they plan to join Miriam Rosenthal and her Mamirauá team on a trip to release an injured one-year-old manatee back into the wild.