When it debuted in 1975, Jaws terrified audiences and made its movie production studio rich. This led to three sequels in 1978, 1983, and 1987. The last one, Jaws: The Revenge secured seven Golden Raspberry Awards and is widely regarded as among the worst sequels ever made.
Nonetheless, it was commercial success, earning more than $51 million in box office receipts, which was more than twice the production cost. So Universal Pictures continued to make Jaws movies, as we can see in Back to the Future II. When Mary McFly visits October 21, 2015, he sees an advertisement for Jaws 19. Here's a trailer that Universal recently made for Marty's future and ours.