Scalloping in Crystal River, Florida. Rent a boat for the day and hit the river. Choose a spot and go diving for some scallops. Closer to the dock, there are ladies that will scalp your scallops for a small fee. Devils Den gets pretty crowded and if you are not early enough, you might have a really long wait as they only allow a certain number of people in the pool at a time. There is no time limited on how long you can spend in there, but nobody stays too long, as the water is freezing. Go to the beach and dig for shark teeth!