Commercial fishermen are the greediest, stupidest people on earth.
It was very clear that this was a very, very old site. There were remains of sod walls. Fishermen assumed it was an old Indian site. Bu Indians didn't use that kind of buildings and houses.
I have seen one shrike occupy himself for hours in sticking up on thorns, a number of small fishes that the fishermen had thrown on the shore. The fishes dried up and decayed.