It is thrilling to see dolphins jump at sea. Surprisingly, a jumping dolphin might not be playing. It might be sending an important message. A person who knows why a dolphin jumps has their very own Rosetta Stone of dolphin communication. Written by a foremost authority on dolphin behavior, the vivid photos and compelling short stories of this first-of-its-kind book offers a striking glimpse into the exotic world of our beloved acrobats of the sea.