We also came across a boat (I think it's a shrimp boat) that has been slowly disappearing into the sand. This is the first time I’d seen it, but Jaime said he saw it three or four years ago when he was fishing in the vicinity. It was not embedded nearly as deep in the sand as it is now. Bear in mind that because we have about a 10-foot difference between high and low tides, the boat is completely underwater at high tide.