Ricou Browning, a professional diver and swimmer, was required to hold his breath for up to 4 minutes at a time for his underwater role as the "Gill Man." The director's logic was that the air would have to travel through the monster's gills and thus not reveal air bubbles from his mouth or nose. Thus, the costume was designed without an air tank. In the subsequent films, this detail was ignored and air can be seen emanating from the top of the creature's head. In this film, the eye ...[Read Story ]