A 2014 maritime boundary treaty between Russia and Estonia has not been ratified yet due to tension between the two countries. Such tensions have become worse after Russia invaded Ukraine in February ...

After a series of suspected undersea cable cuttings, NATO has launched a new surveillance and deterrence mission to protect critical infrastructure under the Baltic Sea.

In just three months, three incidents of damage to Baltic Sea underwater cables have taken place. While accidential cable slices are common, the cluster raises suspicion.

Researchers have successfully revived algae that remained dormant within sediment at the bottom of the Baltic Sea for more than 7,000 years. The tiny diatom cells have regained full biological ...

Finnish investigators probing the damage to a Baltic Sea power cable and several data cables said they found an anchor drag mark on the seabed, apparently from a Russia-linked vessel that has ...