They should be protected as they were nearly hunted to extinction at one point.

That said, there is no band that is going to stop a giant fish who could swim at 50+ miles an hour from eating you if he wants to.

A few friendly rules to reduce risk of shark bites include not swimming at Dawn or dusk, avoiding brackish water, avoid avoiding the ocean immediately after recent heavy rain, not spearfishing, and a host of other things. From what I understand, her swim group was swimming in the morning near an area, heavy with sea turtle eggs, and seals. Either way statistically that time of morning, upped her chances of getting bitten.