We have just got through another bumper summer of sharks eating surfers and other assorted floating humans, I believe 9 all up. Those White Pointers don't need any US Psyops to get them stir crazy, they're bonkers from the word go.
Swimming in the sea in Australia is fraught with danger however sensible, practical steps can dramatically reduce the risk. For example always swim with several children around you. Stay away from wimmin enjoying their monthly. Get out of the water first before raising any alarm as the mass thrashing about caused by people trying to get out quickly winds the shark up. If being attacked try throwing small children, dogs or mongs at them, thy may get tired and go away.