Ocean currents can carry things from far away, and put them where you would least expect to find them.
When I was young, the Canadian Government put out notes in a bottle, asking for you to put into the enclosed envelope when, and where you found the bottle. To do that, they would send back a crisp 5.00 Canadian note. I made 20.00 one summer! I kept one intact, but that has long ago left my possession. Oh, to have it drift back on a beach for me to find..... Great article.