The Vasa, a Swedish ship which sank in Stockholm harbor in 1628 was raised up from the Baltic Sea around 300 years after it sank. It was in excellent condition considering the circumstances. History seems to remain intact on the bottom of the Baltic Sea. Shipworms don’t usually meddle with shipwrecks in this cold, low-salt area. The well preserved ships might be changing soon due to global warming. The ranges of shipworms are starting to spread to these areas and may affect over 100,000 thousand shipwrecks that reside there. Shipworms are actually not worms but saltwater clams that overtime can devour wood structures including docks, piers, and ships. The worm/clams inhabit the waters around Sweden near the Western Coast. There is practically nothing left of the shipwrecks in these areas. Shipworms are big fans of warm waters. This has scientist wondering if the Baltic Sea is heating up due to Global Warming. 

Information obtained at www.discovermagazine.com Images obtained at www.bethesignal.net www.nationalgeographic.com and www.science.gu.se