Mr. Peabody and the Mermaid is a 1948 American fantasy film directed by Irving Pichel starring William Powell and Ann Blyth in the title roles. Irene Hervey plays Mr. Peabody's wife. The film was based on the 1945 novel Peabody's Mermaid by Guy and Constance Jones. Sequences were shot at the Weeki Wachee Springs in Florida.