Decades after WWII, unexploded ordnance is leaking toxic chemicals into the Baltic Sea, posing a threat to marine life and human health.

Researchers at the University of Gothenburg have discovered that what was previously thought to be a unique seaweed species of bladderwrack for the Baltic Sea is in fact a giant clone of common bladderwrack,

According to a study, the GPS interference observed in the Baltic Sea is technically sophisticated and apparently also originates from the Russian shadow fleet.

The invasive Pacific oyster has adapted to life in less salty seas and is reproducing off the coast of Skåne, despite having been there for less than ten years. A study by researchers from the University of Gothenburg shows that the oysters may be able to colonize the western Baltic Sea in the future.

It is estimated that about 300,000 metric tons of unexploded ordnance (UXO) remain in the German Baltic Sea. Most of this originates from deliberate dumping after the end of the Second World War. These dumping sites are well documented,

The bloc announced new steps to prevent threats to undersea lines after Sweden discovered damage to one east of Gotland island.

Swedish authorities say they are investigating a damaged cable that was discovered in the Baltic Sea, the latest in a string of recent incidents of ruptured undersea cables that have heightened fears of Russian sabotage and spying in the region.

Vessels in the Baltic Sea are regularly witnessing satellite positioning jamming according to Polish researchers who want more help to increase surveillance.

Copyright 2025 The Associated Press. All Rights Reserved. Sea rescuers and wildlife activists in dinghies approach a whale to cut it loose from fishing nets off the ...