I blame it on errant boating.
Too many take their guns with them when they go boating and hit an errant turtle or something, causing the boat to tip and guns to fall out into the deep water.
It has almost reached a point of becoming pandemic. We need tighter regulations either on who can be on boats or how boats are shaped.
Maybe we should consider an entire ban on boating and boats in waters over 6 inches in depth.
To hear people talk, you would think that certain lake and river bottoms are more metal than mud.
I agree. When guns are outlawed, only boats will have guns.