After several attacks, the police chief enlists the help of marine biologist Matt Hooper (Richard Dreyfuss) and a professional shark hunter Quint (Robert Shaw). The three voyage out onto the ocean in Quint's boat – the "Orca". The shark kills Quint, but Brody manages to destroy it by shooting at the highly pressurized air tank that he has wedged in its mouth. In the end, Brody and Hooper are seen swimming away from the sinking "Orca", having both of them managed to survive the shark attack on the boat uninjured. The first sequel, "Jaws 2", depicts the same town three years after the events of the original film when another great white shark arrives on the shores of the fictional seaside resort of Amity Island. Directed by Jeannot Szwarc and starring Roy Scheider again as Police Chief Martin Brody, who, after a series of deaths and disappearances, suspects that the culprit is another shark. However, he has trouble convincing the town's selectmen. Once fired, he has to act alone to save a group of teenagers, including his two sons, who encounter the shark whilst out sailing. Brody then manages to fry the shark at Cable Junction upon pulling up one of the underwater cables. The plot of "Jaws 3-D" moves away from Amity Island to SeaWorld in Florida, a water themed-park with underwater tunnels and lagoons. As the park prepares to open, it is infiltrated by a baby great white shark which attacks and kills water-skiers and park employees. Once the baby shark is captured, it becomes apparent that a much larger shark, the mother, is present. The characters of Martin's sons from the first two films are developed further in this film: Michael Brody (Dennis Quaid) is the chief engineer of the park and his younger brother, Sean (John Putch), arrives at the resort to visit him. The events of the earlier films are implied through Sean's dislike of the water because of "something that happened when he was a kid." The events and character development from "Jaws 3-D" are independent from the rest of the series. The fourth and final film, "", sees the storyline returning to Amity Island, but ignores all plot elements introduced in "Jaws 3-D". No mention is made to Michael's girlfriend from the previous film, Kathryn Morgan (Bess Armstrong), or his career change from an engineer at SeaWorld to a marine biologist.