(Credit: NASA/Operational Land Imager)
Published on Eos.org
Newly drilled cores from the Baltic Sea reveal 1,500 years of deoxygenation history. The record sheds light on the dire state of the Baltic Sea today.
Around the world, excess nutrients in coastal waters can lead to feeding frenzies for marine algae. Once the algae die and decompose, the water that’s left behind may have little to no oxygen to support life.
These oxygen-starved waters are called dead zones. Fish and other marine life must flee them or reduce their habitats to avoid suffocating. In some cases, the unlucky faunas suffer mass die-offs.