As I understand it the same sort of thing is happening in California.
It is, and in California there will be more shark attacks than here in New England because our water is colder and swimmers don't spend as much time in the water as they would in the warmer water states. Those states have a lot more people out in the water.
Even our surfers here in New England wear wet suits because of the colder water.
IMHO Some Bull sharks ,given the opportunity will immediately go on the attack, whereas White sharks tend to spend more time than bulls in analyzing the prey.
By the time a white shark is ready to take a sample bite, you could back on the shore drying off from the colder water.-Tom