This third film in the series follows a group of marine biologists attempting to capture a young great white shark that has found its way into the brand new 'Sea World' complex in Florida. All seems well in this new complex which offers visitors the chance to view the undersea kingdom from the safety of glass tunnels on the sea-bed… That is until the young shark's mother arrives on the scene – and she is a one unhappy thirty-five foot white shark who proceeds to upset things and wreck havoc for the biologists and park visitors alike…