A six-inch butter clam harvested on August 28 three miles north of Savoonga tested positive for saxitoxins, or paralytic shellfish poison, Norton Sound Health Corporation Environmental Coordinator Emma Pate said.The clam itself showed high levels of saxitoxin present: it had 450 micrograms of toxin per 100 gram of body tissue. The Food and Drug Administration’s safety limit is at 80 micrograms/100 g. Pate, via the SEATOR lab, on Sept. 23 issued a paralytic shellfish toxin advisory to Savoonga and Gambell.