Seafood watch

This is a great tool to have on hand when you eat fish:
http://www.guardian.co.uk/news/datablog/2011/jun/24/information-beautiful-fish-eat#zoomed-picture

A lot of fish in our world are overexploited, and their populations are declining quickly so we might not have them to eat in the future. Other seafood, like shrimp, is harvested in a way that is completely destructive to all the other marine life...imagine hunting by uprooting all the trees in a forest and shaking them upside down and throwing away everything except one animal. That is basically how shrimp are caught.

What's interesting is that sometimes restaurants call a fish by a popular name but serve something else, based on what they can get. Get a Seafood Watch card from the Monterey Bay aquarium and take it with you when you buy seafood.