The Ocean X team have released another update explaining what they found when they dived down to investigate the mysterious circle shaped object they discovered on the bottom of the Baltic Sea.
They said it is something they have never experienced before. At first they thought it was a rock cliff or just a stone but after examining it closer they found it was more like 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. The path leading to the object can be described as a runway or downhill path that is flattened on the seabed with the object at the end of it.
Scientists are currently examining samples taken from the object and sonar experts are processing data from the ship to try and identify what it could be.
You can read more here http://www.oceanexplorer.se/