Best seafood to buy at Costco I LOVED tuna salad growing up, but when I found out it can be high in mercury, I stopped eating it. Luckily, I found this brand, Safe Catch! They test every single tuna to ensure it’s 10x lower than what the FDA requires for mercury in tuna. Grab some Safe Catch tuna at a Costco near you! #safecatchpartner safecatchfoods