Manatees are mammals. Baby manatees are born alive. Manatees live a long time. In the wild, manatees live around forty years. In captivity, manatees can live fifty to sixty years. Manatees stay with their mothers for the first two years of life. 1. Click the to watch the video. 2. Click to open the template. 3. Follow directions. 4. Click the green to save.