From the serpentine Champ of Lake Champlain to the venerable Nessie of Loch Ness, extraordinary - and unexplained - creatures of the deep have been reported in sightings throughout the centuries. Now, two of the world’s leading cryptozoological authorities provides a globetrotting field guide to when, where and what kind of mysterious aquatic beasts have gripped the public - and sometimes the scientific imagination. Filled with comprehensive drawings, classifications and maps their book offers an invaluable and unusual resource for the intrepidly curious to investigate these sightings firsthand or to simply enjoy the fascinating accounts that others have given.