Allison Little, a middle school assistant principal from Anchorage, has been fishing on the Kasilof River her entire adult life, so she’s used to seeing wormy parasites coiled up in fish on occasion. But last year, as she cleaned her dipnet catch, the worm situation edged into horror movie territory.

“There were so many in this one fish, I wasn’t quite sure what I was looking at,” she said. “I put salt on the fillet and they just started coming out everywhere. This was enough where I actually disposed of it.”

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