Paralytic Shellfish Poison (PSP) has been detected at unsafe levels in Quartermaster Harbor shellfish on Vashon-Maury Island.  As a result, the Washington State Department of Health (DOH) has closed Quartermaster Harbor beaches to recreational shellfish harvest. The closure includes all species of shellfish including clams, geoduck, scallops, mussels, oysters, snails and other invertebrates; the closure […]