An academic who's doing a thesis on the politics of shark attacks has compared Western Australia's policy to the Hollywood blockbuster Jaws.
The University of Sydney's Christopher Neff says WA's "imminent threat" policy is based on the Steven Spielberg movie about a rogue man-eating shark, which was adapted from the 1974 novel by Peter Benchley.
He says it reflects three themes from the film: that sharks mean to kill, all encounters between humans and sharks are fatal, and the only solution is to kill the sharks.
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"This fiction serves an important political purpose because films allow politicians to rely on familiar narratives following shark bites to blame individual sharks in order to make the events governable and to trump evidence-based science," he said.