Yes, diving may be tough. If I didn't already put most of those bottles in my tank, I would send him one.
We also occasionally find round bottom bottles that were filled with sand and used as ballast in sailing ships from Europe. Those round hulled ships could not sail without ballast so they filled them with these bottles and threw them out here to fill the ships with gold and Myley Cyrus CDs to bring back to the Old World. :crazy: