By Alex Tellez
Most of us in the Puget Sound area are aware that the iconic Southern Resident Orcas and the food chain that supports them are exposed to toxic contaminants, habitat loss, hydropower dams, vessel strikes, noise pollution, ocean acidification, climate change, and overharvesting of Chinook salmon – their primary source of food. But there may be another threat lurking in our waters that is relatively unnoticed: invasive zooplankton.
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Image: View of the Puget Sound and BNSF railway from Carkeek Park, a 216 acre coastal park located in the Broadview neighborhood of Seattle, Washington. (Photo by Marlena Skrobe)