A gingerbread man searches all over the school for the group of children that made him and then left him behind.

"Throughout the world's oceans, the tides are always in motion. In Ocean Energy, learn how scientists harness this motion to generate clean electricity, discover where ocean energy is being used today, and explore what the future of this technology may hold. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject."--Publisher's description.