(CNN) -- Divers are recovering bottles of champagne that have been lying at the bottom of the Baltic Sea for about two centuries, an autonomous Finnish island official said Wednesday.About 70 bottles lie mostly undamaged at 50 meters deep [roughly 164 feet] south of the Aland Islands."The first bottle was brought to the surface in mid-July," Rainer Juslin, permanent secretary of the island's ministry of education, science and culture, told CNN via telephone from Mariehamn, the capital of the Aland islands. "We believe this is the oldest champagne in the world."