Live Science
By Rachel Parsons
October 11, 2023
A vast methane leak has been discovered at the deepest point in the Baltic Sea, and masses of bubbles of the greenhouse gas are rising far higher into the water column than scientists had expected.
Researchers found the enormous leak 1,300 feet (400 meters) beneath the water’s surface during an expedition to the Landsort Deep — the Baltic’s deepest spot — in August. The area leaking methane is roughly 7.7 square miles (20 square kilometers), equivalent to about 4,000 soccer fields.