Brucetta is the nickname for the the shark depicted in the film Jaws: 3D and serves as the Main Antagonist.
Role in Jaws 3D
Her child died in captivity, causing her to fly into a rage (although sharks do not have maternal instincts), so Brucetta went into Sea World and started killing people or destroying portions of the park's underwater tunnels. She eventually destroyed the underwater control room, getting her head stuck in the window and killing a technician in the process. Earlier she had failed to devour FitzRoyce's corpse (although succeding into killing him), which still contained a hand grenade. Mike Brody was able to use a metal pole to pull the pin out of the grenade, blowing Brucetta's head apart and killing her. Her jaws fly into the screen.
Following story arc lineage, this shark is believed to have been the granddaughter of the shark seen in the first film Jaws or a seperate shark altogether. At roughly 35 feet, she is also the largest shark yet seen in the Jaws Franchise.