Eutrophication and rising water temperatures are taking an increasing toll on the Baltic Sea, leading to dangerous oxygen ...

Around 700 ocean sites are now suffering from low oxygen, compared with 45 in the 1960s. Researchers say the depletion is threatening species including tuna, marlin and sharks. Concerns over ocean ...

At this point, there seems to be some oxygen depletion, but not enough to cause dead zones. According to Kessler, "At some locations, we saw depletions of up to 30 percent of oxygen based on its ...

Eutrophication and rising water temperatures are taking an increasing toll on the Baltic Sea, leading to dangerous oxygen depletion in deeper water layers and threatening many marine organisms.

Experts in the region say it is due to a depletion of oxygen due to high water temperatures. Thomas Conley was sitting next to Isaiah Rodriguez at lunch when he noticed something was wrong.