The huge structure could potentially be the oldest Stone Age megastructure built by humans in Europe.
Scientists have been left perplexed by a series of unexplained quakes on the Danish Baltic island of Bornholm.
Divers searching for fishing nets have uncovered one of the infamous code machines used during World War II.
The incredibly well-preserved wreck of a Renaissance vessel has been discovered on the ocean floor.
Bottles of the aged delicacy had been retrieved from a shipwreck at the bottom of the Baltic Sea.
Stone Age artifacts left behind by Swedish nomads have been unearthed on the floor of the Baltic Sea.
The mysterious rocks found by Peter Lindberg's Ocean X team could be little more than glacial debris.
Some scientists believe the anomaly could be a WWII weapon designed to thwart enemy submarines.
Divers investigating the Baltic Sea anomaly are claiming that it is intefering with their equipment.
Divers investigating the anomalous circular object on the Baltic sea floor have found something unusual.
The large circular object on the floor of the Baltic Sea has been rediscovered by Ocean Explorer divers.
A dive team are to venture in to the depths of the Baltic Sea to investigate a mysterious object.
Copenhagen Suborbitals have successfully launched their HEAT-1X rocket over the Baltic Sea.
Divers have found the world's oldest known drinkable champagne in a shipwreck from the 1780s in the Baltic Sea.