Bull shark being able to tolerate the high salinity of marine water. Since bull sharks often dwell in very shallow waters, are found in many types of habitats, are territorial by nature, and have virtually no tolerance for provocation, they may be more dangerous to humans than any other species of shark, and along with the tiger shark and great white shark, are among the three shark species most likely to bite humans. One or several bull sharks may have been responsible for the Jersey Shore shark attacks of 1916, which were the inspiration for Peter Benchley's novel "Jaws". The speculation of
Jaws (film) the story was to change the cause of the shark's death from extensive wounds to a scuba tank explosion, as he felt audiences would respond better to a "big rousing ending". The director estimated the final script had a total of 27 scenes that were not in the book. Benchley had written "Jaws" after reading about sport fisherman Frank Mundus's capture of an enormous shark in 1964. According to Gottlieb, Quint was loosely based on Mundus, whose book "Sportfishing for Sharks" he read for research. Sackler came up with the backstory of Quint as a survivor of the World War