![Paralytic shellfish poisoning due to ingestion of contaminated mussels: A 2018 case report in Caparica (Portugal) - ScienceDirect Paralytic shellfish poisoning due to ingestion of contaminated mussels: A 2018 case report in Caparica (Portugal) - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2590171019300141-fx1.jpg)
Paralytic shellfish poisoning due to ingestion of contaminated mussels: A 2018 case report in Caparica (Portugal) - ScienceDirect
![Most paralytic shellfish poisoning cases were among Alaska Natives, but state lacks data for subsistence foods Most paralytic shellfish poisoning cases were among Alaska Natives, but state lacks data for subsistence foods](https://media.ktoo.org/2019/08/PSP5-830x623.jpg)
Most paralytic shellfish poisoning cases were among Alaska Natives, but state lacks data for subsistence foods
![Dangerous Levels of Paralytic Shellfish Poisoning (PSP) Toxins Have Been Detected in Mussels from Humboldt - Redheaded Blackbelt Dangerous Levels of Paralytic Shellfish Poisoning (PSP) Toxins Have Been Detected in Mussels from Humboldt - Redheaded Blackbelt](https://kymkemp.com/wp-content/uploads/2021/05/unnamed-32.jpg)
Dangerous Levels of Paralytic Shellfish Poisoning (PSP) Toxins Have Been Detected in Mussels from Humboldt - Redheaded Blackbelt
Butter clams and varnish clams store paralytic shellfish poison (PSP) longer than other shellfish. After a harmful algal bloom, these clams can remain toxic for a year or more after PSP levels
![Prevalence of Paralytic Shellfish Toxins in Marine Food Webs of Prince William Sound and Kachemak Bay, Alaska - NCCOS Coastal Science Website Prevalence of Paralytic Shellfish Toxins in Marine Food Webs of Prince William Sound and Kachemak Bay, Alaska - NCCOS Coastal Science Website](https://cdn.coastalscience.noaa.gov/csmedia/2020/01/Alexandrium-Blooms-and-Saxitoxins-in-the-Marien-Food-Wed-of-Alaska.jpg)