1943
 "Par 18 mètres de fond" ("Into 18 meters of depth"), first film of the "Three
Musketiere" : Jacques-Yves COUSTEAU, Philippe TAILLIEZ and Frédéric DUMAS
1945
 Victor DE SANCTIS makes the first underwaterfilm with a professional 35 mm-camera
1947
 first television broadcast in 54 m depth before the Bikini-Island, during  the experiments with an atom bomb
1947
 the first 35 mm color film with artifical light is produced by the GERS (French navy) at the Tunesian coast
1950
 photo in -5400 m by David OWEN von der Woods Hole Oceanographic Institution (USA)
1950
 in the USA Dr. THORNDIKE develops a water-corrected lens; in France Alexandre IVANOFF and Marcel DRATZ work on similar lenses