Tors was born in Budapest, Hungary. He wrote several plays in his native country before moving to the United States just prior to World War II. He arrived with his brother Ervin in July 1939 on the SS Hansa and had come to study at Fordham University in New York City. He subsequently enlisted in the United States Army Air Corps then transferred to the Office of Strategic Services. Following the war, he was contracted to Metro-Goldwyn-Mayer as a screenwriter. In 1952, he made Storm over Tibet, his first film as co-writer and producer. He began his partnership with his fellow Hungarian Andrew Marton with this film, reusing much of Marton's footage from Demon of the Himalayas. Long interested in fact-based science fiction, often with an underwater setting, Tors partnered with actor Richard Carlson in the 1950s to create A-Men Films, a production company devoted to making films about its own fictitious exploits. Under the A-Men banner, Tors wrote and produced The Magnetic Monsterreusing footage from the 1934 German film Gold. This was the first film in what became his "Office of Scientific Investigation" trilogy that was followed by Riders to the Stars and Gog, both the same year. The following year came the syndicated television series Science Fiction Theater. Tors also created the underwater series Sea Hunt, starring Lloyd Bridges, and The Aquanauts, starring Keith Larsen, Jeremy Slate, and Ron Ely, which was later renamed Malibu Run. He also created NBC's science fiction series The Man and the Challenge, starring George Nader and Jack Ging and was the executive producer of Ripcord, starring Larry Pennell and Ken Curtis. Tors also produced two Korean War films, Battle Taxi and Underwater Warrior. In the 1960s, Tors left science fiction and concentrated on making films and television series involving animals. He typically would make a film first and then develop a television series based on that film. His animal films included Flipper, Flipper's New Adventure, Zebra in the Kitchen, Clarence, the Cross-Eyed Lion, Gentle Giant, and Africa Texas Style. He also directed Rhino!, and Galyon. Tors appeared as himself on the February 14, 1966 episode of the CBS game show To Tell the Truth. He received two votes. His animal-themed television adventure series included Flipper, Daktari, Gentle Ben, Cowboy in Africa, and Jambo, a documentary series set in Africa. He was also the executive producer of MGM Television's 1967 TV series Off to See the Wizard for ABC. His production company, Ivan Tors Films, did the underwater filming for the James Bond filmThunderball as well as filming his own Around the WorldUnder the Sea for MGM and Daring Game and Hello Down There for Paramount. Tors' studio also filmed Soupy Sales' film debut in Birds Do It.
