Shellfish toxin found at Vashon-Maury beaches public warned, closures in effect

The Washington State Department of Health has closed Vashon-Maury Island's Quartermaster Harbor to recreational shellfish harvesting due to high levels of paralytic shellfish poison (PSP). Affected species include clams, geoduck, scallops, mussels, oysters, and snails, while crab can be consumed if cleaned properly to remove the guts. Public Health – Seattle & King County will work with partners to post advisory signs at the beaches warning the public against shellfish collection. PSP is a potent neurotoxin produced by marine organisms, and it poses severe health risks, including illness and death. Symptoms typically begin 30-60 minutes after eating contaminated shellfish and can escalate to muscle paralysis and respiratory failure.

Notably, the toxin is not destroyed by cooking or freezing, emphasizing the importance of laboratory testing for detection. The closure is a precautionary measure aimed at protecting public health. Authorities urge residents and visitors to heed advisory warnings and stay informed about the risks associated with shellfish consumption.