After storms like what are happening now along the east coast, erosion of the beaches consolidates the targets worth finding. The heavier objects settle in the sand down to hard shell pack, then these storms rip away the softer sand. It's much the same way prospectors find gold settled on bed rock in creeks and rivers. It doesn't jump up out of the sand. You still have to go find it.. This latest storm is a whopper though, and should do some serious damage to the beaches along the whole east coast.