Also, fish. Fish is good. I like fish.
First person to say anything about mercury gets autobann'd. Heavy Metal Toxic Fish would be a stupid name for a band, let alone a sound theory. People would have to eat fish morning, noon and night for any considerable levels to accumulate, and they'd have to be high up the fish-chain. Omega-3 is important. It improves brain function, and keeps the frowny-faces away.
People in New England reap great income from the harvest of fish, and often do so privately, without subsidy. They are known to be stalwart tax resistors, plying their wares for cash at the docks, telling Uncle Sam to kiss their salty asses, pumping lewdly from the hips in mock fornication. They actually do this, and it is to be greatly admired.