What type of canned tuna is OK to buy again? And when is sea bass sustainable?

You probably know about Seafood Watch, which can help you answer these questions. But it’s often hard to get enough information to really use it well. (Uh, was that black sea bass caught with traps, or otter trawl?)

But you know who can get this information? The supermarkets that sell you your fish. Ideally, the stores should be a partner to consumers, helping them influence fishing practices with sustainable choices. But sometimes markets work in the opposite direction, keeping consumers in the dark.

That’s why Greenpeace’s annual report on supermarket seafood is so useful. The “Carting Away the Oceans” report takes a nuanced look at supermarket behavior, good and bad, and boils those details down to a simple score.

The 2014 report, released today, shows that the supermarkets doing the best work are Whole Foods, Safeway, Wegmans, Trader Joe’s, and Hy-Vee. Kroger, WinCo
, Publix
, Save Mart, Bi-Lo, and Roundy’s bring up the tail fin.

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