Case file · Unidentified submerged object
Baltic Sea anomaly
A blurry sonar image of a round object on the floor of the Gulf of Bothnia was promoted as a sunken UFO.
2011 CE · 63.00, 20.50 · status: explained
The account
Treasure hunters of the Swedish Ocean X team took the image in June 2011 and later dived to the site, describing a 60 m circular shape with 'stairs' and a runway-like track. Tabloids compared it to the Millennium Falcon.
The sceptical view
Geologists who saw samples identified ordinary rock (granite, sandstone, basalt) typical of glacial deposits; side-scan sonar often makes natural features look geometric.