Here in Australia the "man eating" variety of shark (mainly white pointers or great white) tend to casually, swim up to anything that may look like food, take a little bite to see if it is appetising and either swim away if it is unpalatable or RIP IT TO SHREDS if it likes what it tastes.
I have seen whites gnaw on the leg of an outboard motor, bite a 2’ hole in the side of a timber boat, tear a mouth sized chunk out of a surf board, and bite on the side of a friend from under his armpit to his waist and half way round his body while he was spear fishing (he survived and you probably know his name – Rodney Fox) Another friend was bitten through the thigh at the same location the next year in the same circumstances, and survived. The third person to be mauled at the same location a year or so later survived the attack but later died from shock due to loss of blood. So we feel here that the sharks are not hunting humans so much as testing them for their menu, hope they never find a “sauce” to put on us to make us more desirable!