A cockle has deep ridges similar to a Ruffles potato chip (Photo courtesy of Alaska Department of Environmental Conservation)

A cockle has deep ridges similar to a Ruffles potato chip (Photo courtesy of Alaska Department of Environmental Conservation)

A cockle has deep ridges similar to a Ruffles potato chip (Photo courtesy of Alaska Department of Environmental Conservation)

A cockle has deep ridges similar to a Ruffles potato chip (Photo courtesy of Alaska Department of Environmental Conservation)

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