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An unidentified circular object measuring 180 feet in diameter was discovered nearly 300 feet below the Gulf of Bothnia in June 2011.
30 crew members aboard the U32 share less than two square meters of private space as they prepare for a top-secret NATO maneuver off Plymouth.
More than 70 meters below the Baltic Sea, investigators search for clues about the sabotage of the Nord Stream pipelines, which occurred in September 2022.
In July 1361, King Valdemar II of Denmark launched an invasion of Gotland, leading to a battle that decimated the local population and changed the island forever.
In July 1361, an invasion force led by King Valdemar II of Denmark landed on Gotland's West Coast, pillaging farms and villages on its march to Visby.
On November 15, 1944, the German U-boat U-479 disappeared without a trace in the Baltic Sea during a secret mission.
A 90-meter deep plunge pool carved into bedrock in the English Channel provides evidence of ancient waterfalls that shaped Europe's geography.
5,000 men, women, and children attempted to flee the Soviet army aboard the General Von Steuben before it sank in the Baltic Sea in 1945.
A white ocean roughly 300 kilometers long and 150 kilometers wide freezes over in the Gulf of Bothnia by the end of February.
Around 2 and a half years of research tracked how Russia uses shadow tankers to bypass oil sanctions and fund its military efforts in Ukraine.
A crew of 240 personnel operates the frigate Mecklenburg-Vorpommern, which serves as the flagship of NATO's Rapid Reaction Force in the Baltic Sea.
The Kogas, a 50-ton pirate ship, is transported over 1,000 kilometers from Lithuania to Berlin, facing multiple logistical challenges along the way.
2,400 kilometers of coastline along the North and Baltic Seas host diverse wildlife, including seals, seabirds, and migratory birds.
More than half of all Europeans and nearly 80% of Americans live in areas where the Milky Way is no longer visible due to light pollution.
A floating crane built in 1974 can lift loads of up to 200 tons as Baltic Sea divers attempt to salvage the sunken fishing cutter Verner Order.
Elaine Harrington is one of almost 3,000 women serving in the Royal Canadian Air Force, where she operates radar stations to protect against air attacks.
Benedict Hutch estimates there are about 5,000 shipwrecks in Polish waters, with only 20% of the ocean floor explored, posing ecological risks.
Russia has amassed approximately 100,000 troops near its border with Ukraine, raising concerns of a potential invasion among neighboring countries.
7.7 gigawatt hours of energy is produced annually by the Naysudin 2 wind turbine, enough to power approximately 1,500 homes.
Sweden enhances military defenses on Gotland in response to threats from Putin's Russia.
Sweden generates 90% of its electricity from hydro and nuclear power, while Australia relies on coal for 80% of its energy needs.
In 2018, David Griffin proposed generating solar power in northern Australia to sell to Singapore, which relies heavily on fossil fuels for energy.
One blue mussel can filter several liters of water an hour, playing a vital role in the unique ecosystem of the Baltic Sea.