An article on a Polish news site reports that an A-20G has been found at a depth of 15 m in the southern Baltic:
http://trojmiasto.gazeta.pl/trojmias...tml#LokKrajTxt. The video gets interesting at the 0:50 mark.
It's supposedly in decent shape from what they can see, it's missing its tail and part of the nose. The Krakow museum of flight (home of the last remaining P-11) would like to raise it in September.
This must be a lend-lease model used by the Soviets. There are currently only 12 in the world, though the Swedes may also have found one and the Russians are looking for one reportedly in one of their rivers.