I can read it. Pretty cool.
I would figure that the variations in water temperature and lack of signficant marine mammal populations would keep the populations of whites down on the Northern right coast.
I do know that they are caught off the Delaware and Maryland shore every once in a while, probably chasing whales calving off the Delaware Bay.
New England has always been the normal range for the white shark. Their numbers have been down and that is why so few sightings are made.
In the last few years more seem to be showing up. They have been protected on the east coast since 1997, and that seems to be a help in their recovery.
There are plenty of seals around, especially off Chatham on Cape Cod.- Tom