When Diego hears a squeal he knows that an animal needs rescuing! Diego learns the sounds are coming from a baby manatee, who cannot get to her mother because a motorboat is blocking her path. Not only do Diego and Alicia reunite the baby manatee with her mum, they also help them find an undeveloped mangrove forest in which to make a new home. This exciting adventure story also includes facts about manatees, an endangered species.