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I never understood the logic that mercury levels are higher in fish that are bigger.
Sure, as a whole, they'll have a more total combined amount of mercury, but proportionally, a big fish should have the same amount of mercury per square inch as a small fish would.
I heard that it depends on how long the fish lives. Like a fish that lives for a week won't have time to build up much mercury in their bodies as opposed to a fish that lives 5 years.
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