But you only need to educate those who may become exposed.

But isn't that part of the irony? Bazillions of people are "exposed" to beaches, while a smaller number are exposed to pigs. But still, the deaths from pigs outnumber the shark attacks. The risks involved from sharks are so miniscule that any attention devoted to the subject is a huge economic waste (since that time and effort could have been directed towards something better, say gum chewing safety awareness).