Philippe Cousteau looks at some amazing feats of construction by animals. He visits a beekeeper who shows the incredibly precise honeycomb formations made by bees. Then, visiting a spider display in Los Angeles and looking closely at the intricacies of a spider web. Philippe travels to Pennsylvania where a beaver has been building several dams all by himself. Also, a look at various types of bird nests, including a bird that actually builds a false entrance to fool potential prey.