And this is not good news because it means that the animal removed from the free-living has little chance of returning to live in nature.
Last year, at least 13 animals had to be rescued in the rivers of the State of Amazonas.
Amazon manatees, cousins of elephants, are the heirs of a strain with at least 50 million years.
Liberation took place took place in Quistococha lake, 20 minutes from downtown. Mammals are victims of illegal hunting.
The project, the first in Brazil with aquatic mammals, will use an latest generation equipment from Kyoto University
Hunted by poachers, the animal needs to be adapted in stages to return to their habitat.