“Dead zones” in the sea are caused when the oxygen levels are so low that most aquatic life cannot be sustained.
Editor’s Note: The video above about Puget Sound kelp forests was originally published in August 2021.
SEATTLE – The Washington State Department of Ecology (WSDOE) says that excess nutrients from humans are contributing to low oxygen levels in Puget Sound.
If oxygen levels drop low enough, it could lead to what’s called “dead zones,” or areas where aquatic life cannot be sustained because of the lack of oxygen.
The current levels of dissolved oxygen in Puget Sound do not meet water quality
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