Yes, once about 35 miles off the NC coast we had 3 down around us.* No radar, but we could see which way they were moving.* The problem was that we could run, but there was a Jersey Skiff out there with a disabled engine.* We said that we would take them off the boat with us, but they elected to stay.* We hung around keeping a close eye out in case they needed us.* Two of them went on either side of us.* Scarry.* I have a black and white photo of one down and 2 more ready to drop.* It is not digital.* After they dispersed, we loaned the other boat a battery to get them back home.
We have seen a couple of others, one in the Keys, but not that close.