The Ocean X Team dove down to the circle-shaped object in the Baltic Sea and met something they never experienced before. First they thought it was just stone or a rock cliff, but after further observations the object appeared more as a huge mushroom, rising 3-4 meters/10-13 feet from the seabed, with rounded sides and rugged edges. The object had an egg shaped hole leading into it from the top, as an opening. On top of the object they also found strange stone circle formations, almost looking like small fireplaces. The stones were covered in something resembling soot.
“During my 20-year diving career, including 6000 dives, I have never seen anything like this. Normally stones don’t burn. I can’t explain what we saw, and I went down there to answer questions, but I came up with even more questions “, says Stefan Hogeborn, one of the divers at Ocean X Team.
The path to the object itself can be described as a runway or a downhill path that is flattened at the seabed with the object at the end of it.
“First we thought this was only stone, but this is something else. And since no volcanic activity has ever been reported in the Baltic Sea the find becomes even stranger. As laymen we can only speculate how this is made by nature, but this is the strangest thing I have ever experienced as a professional diver“, continues Peter Lindberg, one of the founder Ocean X Team.
Right now, scientists are examining samples from the circle-shaped object, and experts in sonar imaging are processing data from the ship to hopefully shed more light over the mysterious object.
According to Swedish online magazine Expressen reporter Mary Callenberg the ojbject is probably sandstone. She writes that the divers took a sledgehammer to dislodge a piece of material. Stefan Hogeborn describes "carbonized material." During the last dive divers discovered an "oblong hole in one and a half times the six inches that go into one of the rocks which form the circle".
I have never, ever, ever, seen anything like it, says Stefan Hogeborn.
Expressen has let Martin Jakobsson, a professor of marine geology and geophysics at the University of Stockholm, see an image from the dive who says that it "is probably some kind of sandstone. When you look at the structure, it looks like it."
Please find below first updates from Ocean X Team in Swedish media.
http://www.expressen.se/nyheter/sa-ser-den-mystiska-cirkeln-ut-pa-nara-hall/ 
You are trying to tell us that these stones are what was seen originally? Hate to tell you this but someones pulling a fast one.
Russian sub-sea nuclear testing during the Cold War? There can be other explanations. It looks like a circle of rocks. I don’t see anything alien.
Could it be an artificial metiorite that carbonized on the exterior as it fell to earth? There is a long gouged out trail in the seabottom that leads to it.
The Baltic Sea is fairly new, it was a low lying valley that flooded at the end of the last ice age. England was’nt an island back then either, but a part of main land Europe. So there is a possibility it could be ancient human artifacts.
Why are the latest photo pics so different from the original sonar images !?
a good camera and imagination, you can make anything up
I’m sure they would have told us if they found a UFO…..hahahaha