This is the first film in the Jaws series without Roy Scheider as Police Chief Martin Brody. It is explained that Brody passed away between films due to a heart condition he developed following the events of Jaws 2. This is also the first film in the series that doesn't take place in Amity, New York.
As part of the promotion for the film, a special set of 3-D glasses were passed out to movie patrons, which included a representation of the iconic rising shark image on the bridge of the nose.
Though the shark in Jaws 3-D may have been the biggest marine animal to kick a little ass in 1983, he was not the most famous animal to star in his own film this year. That honor belongs to everyone's favorite psychopathic Saint Bernard, Cujo, who pawed his way through slow-running victims in his own movie on August 12th.
Jaws 3-D is not even the most famous 3-D third installment to use a spear gun. Friday the 13th (Part 3), released a year earlier, includes an infamous scene in which Jason Voorhees fires a spear gun (in spectacular "in-yo-face" 3-D action) at a hapless putz named Shelly Finkelstein, shortly before acquirring his trademark hockey mask.