https://dev.coastalscience.noaa.gov/news/puget-sound-harmful-pen-salmon-threatened-harmful-algal-blooms/
Puget Sound Salmon Threatened Extreme Harmful Algal Blooms
June 2014 extensive harmful algal blooms, including H. akashiwo, caused the deaths of 80,000 net pen salmon. More would have died without NCCOS monitoring.
puget sound salmonharmful algal bloomsthreatenedextreme
https://www.gonefishingnw.com/tag/2016-puget-sound-salmon-closure/
2016 puget sound salmon closure – Gone Fishing Northwest
puget sound salmongone fishingclosurenorthwest