 The tiny mermaid in Dr. Pretoriuss bottle was portrayed by  Josephine McKim, a member of the 1924 and 1928 U.S. Womens Olympic  Swim Teams and one of the four members of that team to win the 1928  gold medal in the 400 Meter Freestyle Relay. McKim was also Maureen  OSullivans body double in the infamous nude swimming scene of the  previous years _Tarzan and His Mate (1934)_ (qv).