A former Miss Yugoslavia, Tania also competed in the 1954 Olympics as part of the Yugoslavian swim team. She appeared in only three movies that I can find and one episode of Sea Hunt in 1958.

Fiend of Dope Island (1961) .... Glory La Verne
Missile to the Moon (1959) .... Moon Girl
Queen of Outer Space (1958) .... Venus Girl
... aka Queen of the Universe (1958)
Sea Hunt .... "Maria Wenzel" in episode: "Midget Submarine" (episode # 1.12) 29 March 1958