The Baltic Sea Anomaly: A 60-Metre Circle Discovered in June 2011 and the Debate Over Its Origin

To the point

Discovered in 2011 by Ocean X, a Swedish diving team led by Peter Lindberg and Dennis Åsberg, about 90 meters below the Gulf of Bothnia, the Baltic Sea anomaly is a roughly 60-meter circular structure with angular lines that has been explained by natural features like drumlins and rock outcrops, while others speculate about ancient civilizations, WWII relics, or extraterrestrial origins (the “Roswell of the Ocean”), though evidence remains weak and scientists such as Charles Paull view it as a curious natural phenomenon needing open, rigorous study.