In 425 A.D., while walking along the Welsh seashore, sixteen-year-old Corwin discovers a magical shell that leads him to Nia, a mermyd seeking his help to save her home, the long-lost city of Atlantis which still exist under the sea.
- ISBN10 0613626443
- ISBN13 9780613626446
- Publish Date 2 April 2002 (first published 1 April 2002)
- Publish Status Out of Print
- Out of Print 9 December 2011
- Publish Country US
- Imprint Econo-Clad Books, Div. of American Cos., Inc.
- Edition Bound for Schools & Libraries ed.
- Format Hardcover
- Pages 240
- Language English