Joseph M. Alves (born May 21, 1936) is an American film production designer, perhaps best known for his work on the third of the Jaws films. He directed Jaws 3-D.Alves has designed three features for Steven Spielberg, firstly for The Sugarland Express. He designed the three mechanical sharks for the movie Jaws (1975) with mechanical effects man Bob Mattey supervising their physical construction in Sun Valley CA. After the sharks were completed, they were trucked to the shooting location, but unfortunately they had not been tested in water causing a series of delays that have become quite legendary over time. Wikipedia
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