BALTIC SEA ANOMALY

Oceans of our planet covers more than 70 percent of its area and most of the oceans are still unexplored. It is estimated that humans have only explored less than 5 percent of the ocean. Much remained to be learned by exploring the remaining parts and to know what mysteries lies beneath deep oceans.

There is a Swedish based team of explores called "Ocean X Team" who describe themselves as treasure hunters and salvage operators. This team is specialized in underwater searches for sunken historic artefacts and antique alcoholic beverages.

In the summer of 2011, Ocean X team was on an expedition in the Baltic sea between Sweden and Finland. The team came back with a blurry but very interesting sonar image of a 60 meters (200 ft) diameter mysterious circular object with prominent and clear features resembling stairways, ramps and other structures which do not seemed to be produced by nature. To further investigate the matter and to get a clearer image, the group revisited the site the following year but according to them some mysterious electric interference prevented their electronic equipment to work properly. 

No of possibilities have been predicted such as presence of any German secret war machine during World War II or natural formation due to geographical changes in earth. It had also been claimed that the object could be a UFO or a portal to the other world.