Mr. Kav,
You aren't kidding. I spoke a few years ago to a spotter pilot for the commercial Tuna boats that fish East/SE of Nantucket. He said to me that it was easier to spot the Great whites and Makos from the air than the Tuna. That was the fastest way to zero in on the school.
His next comment was that he would NEVER, EVER swim on the East/SE side of the island EVER. The sharks offshore were THAT big.
Well, I finally got out there and it took a few trips to see some big ones. The whites were hard to get close to but we figured a few of them to be 15' with ease. LOT'S of 8-12' Makos and Blues.
Crazy.
1996 a 15-18' GW is spotted and photographed right off Sankaty Light cruising the surface. You just cannot believe HOW MANY people swim that East beach. And they are some affluent S.O.B.'s.
One of these days it is going to get ugly. I'll beach fish that stretch at night and you get spooked once in a while about wading much past you knees.
We are lucky that seals aren't even close to being their primary dinner. If that day comes No One will be able to swim out here or on the Cape and Vineyard again. Kind of like that movie from the 70's, eh ?