Ages 6 to 12 years. There are only three species of manatees on Earth, and all three species are at risk. These gentle marine mammals live in warm, shallow lagoons and coastal waters where fast-moving boats, water pollution, and cold weather pose a constant threat. Beautiful images of these appealing animals help readers learn about: manatee bodies and behaviours; the habitats in which manatees live around the world; how red tides further endanger manatees; what is being done to save them.