Bainbridge believes Lake Superior's advisories misleadingly brand all fish as unsafe. “Lake Superior is still one of the most pristine resources for consumable products,” he said.
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Sea lampreys are the Great Lakes' biggest predators. They attach to valuable fish and feed on their victims blood and body fluids.
Three species of Pacific salmon have been introduced to Lake Superior in the past few decades and now reproduce naturally in the lake. All feed in the big lake until they reach sexual maturity. In the fall, all three species swim up rivers to spawn and die, completing their life cycle.