It's easy to imagine something lurking beneath the deep, dark waters of a loch, river, or sea. Since even today we don't know every animal that lives deep underwater, historical accounts of fearful creatures swimming below the surface seem to have simple explanations. This book explores the many myths and legends about sea creatures, some of which are centuries old! Full-color illustrations, paintings, and more from cultures around the world showcase the extraordinary imaginations behind some of these stories. In addition, fact boxes offer readers a chance to debunk historical accounts and understand why these tales began at all.