Well, the US Navy certainly pulled a number of Dauntlesses, Wildcats and the like from Lake Michigan which were in quite good condition. Saw a couple, one of which was unrestored and looked quite remarkable. They'd ditched while using the training carriers.
Unfortuantely there has been some dispute between the USN and private individuals who have tried to do the same.
There were other stories about various aircraft discarded from carriers off Australia near the GBR which were alleged to be in good nick... that one seemed to fizzle out as well - anyone know more?