This helps sharks (particularly the hammerhead shark) find prey. Modern examples include the blue shark and bull sharks. This makes the great white shark the largest extant macropredatory fish. The attacks were caused by the species bull shark and tiger shark. Parthenogenesis occurs in the hammerhead shark and the blacktip shark. Examples include dolphins saving humans from drowning or from shark attacks. This artwork features a large tiger shark suspended in formaldehyde. Sanchez has Leiter lowered into a tank holding a tiger shark. They do not engage in sibling cannibalism unlike the sand tiger shark ("Carcharias taurus"). An estimated female orca immobilized an estimated great white shark. Furthermore, the name creates confusion with the unrelated tiger shark "Galeocerdo cuvier". It is a substitute for shark fin soup. The heaviest known leopard shark weighed . However, Jaws kills the shark and escapes. Only 192 people survived, with many deaths attributed to the oceanic whitetip shark.