Jaws 3 sees the sons of Sheriff Brody now in Florida, as eldest son Mike (Dennis Quaid) has laid the foundations for a two-year project to bring an underwater structure in the lagoon at Sea World to life.  The younger brother, Sean (John Putch) is also visiting, although he is still suffering from a strong phobia about getting in the water, brought about from his harrowing near-death experiences with sharks from his youth.  He has reason to fear, as it appears that a young Great White shark has entered the lagoon and is terrorizing the pre-opening day adjustments, having gotten through the filtration system, and begins snacking on whatever it can find.  However, when one of the crew ends up viciously chomped, it appears that a much larger shark must have been responsible, as they shudder to realize that the young shark's mother, a massive 35-foot long Great White, has also passed into the park, hungry for the taste of human flesh and underwater Sea World structures. Joe Alves directs. Lou Gossett Jr., Bess Armstrong, Simon McCorkindale, and Lea Thompson also appear.