Shorts are seen in Jaws 2 and Jaws 3-D.
In Jaws 2, they are worn mostly by the teenagers. They are all extremely short, even for the time period of 1987.
In Jaws 3-D, they are seen mostly as part of the SeaWorld staff costumes. Michael Brody's co-worker, Dan, wears short blue shorts with a red, orange, and yellow design on the side and the back. In the bar, there is a waitress with dark blue short shorts in the background. A few deleted scenes, it reveals that, Kelly the cheerleader, was supposed to wear yellow short shorts with white bordering and a drawstring instead of beige slacks. Kay Morgan later steals them off the beach when Kelly removes them and wears them the next day.