Over the swamp, the barred owl hoots, and the great egret swoops down on snowy wings. The slow mazes of waterways are quiet with the shush of reeds and grasses. But under the swamp’s soft shadows, there’s a whole hidden world of panthers and orchids, red-bellied turtles and raccoons, lurking alligators and singing frogs. This beautifully illustrated nonfiction picture book reveals all the fascinating creatures living just out of sight in the branches and depths over and under the wetland.