The Estonian navy detained and boarded a Russia-bound oil tanker on an EU sanctions list on Friday, accusing it of sailing ...

Sweden's submarines are small and quiet, perfect for the Baltic Sea that many NATO allies share with Russia.

As these rules-busting, dangerous ships keep sailing our waters, posing enormous risks to other vessels and the environment, ...

Eutrophication and oxygen depletion are well-known threats to the ecological balance of the Baltic Sea, which is increasingly ...

Russia’s army hovercraft carried out artillery fire drills against aerial and naval targets at the Baltic Fleet's maritime training ranges as part of a scheduled exercise. In the Baltic Sea, the crews ...

A Swedish probe found no conclusive evidence to suggest that a Chinese ship had deliberately dragged its anchor to damage two ...

Swedish investigators have stated that they found no definitive proof of Chinese involvement in the severing of two undersea ...

Researchers have successfully revived algae that remained dormant underneath sediment at the bottom of the Baltic Sea for ...

NBC News joined a NATO flotilla as it sailed the icy sea hunting Russian saboteurs accused of targeting undersea cables.

Pharmaceutical pollution in waterways is changing animal behavior. Exposure to an antianxiety drug is affecting migrating Atlantic salmon, according to a new study.

Suspicious Russian tankers keep slashing Europe’s internet and power cables. It’s not an act of war … but someday it might be ...