When it comes to seafood, the general consensus is that fresh is best (fresh fish are some of the world's healthiest foods), but for many people, geography and budget often necessitate the purchase of canned seafood. It may surprise some folks, but when it comes to canned fish, shellfish, and other ocean delights, there are actually many healthy and sustainable options available, including oysters, anchovies, and mackerel. However, things aren't always so cut and dry when it comes to navigating the waters of the canned fish aisle, and there are some products that are best avoided altogether, whether due to environmental concerns and sustainability, toxicity, labor ethics, or all of the above.
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Fortunately for the conscientious shopper, there's plentiful research available to help you steer clear of the worst offenders. If you're opting for the canned version next time you get a seafood craving, be sure to leave these four selections off your shopping list.