there is an area of ocean, off the coast of Australia, where the U.S. navy would load carriers full of WW2 ' worn out' aircraft after the war ended , and push them overboard ! Better than trying to ferry them back to the U.S. to be smelted into aluminum ingots here. I guess they held no value barely then, and like the Civil War, people wanted to forget the last 5 years and get on with their lives. I saw photo's and it looks like an airport underwater; Corsairs, Mustangs, Lightnings, Wahawks - you name it. they are down there. And it is deep water, so they are preserved pretty well. Any magnesium is gone, but what I saw was planes in amazing shape. Not the coral encrusted photo's you see of planes found around the Pacific Islands. Australian government is claiming ownership, groups are trying to work with them to bring some up. This was all about 15 plus years ago when I was heavily involved in WW2 airplanes, I don't know what has happened since. Plus, they said the area was heavily populated by sharks, big sharks !!