Seafood Watch is a very cool and very practical conservation effort led by the Monterey Bay Aquarium. Basically, it is a regularly updated guide to which lake and ocean critters should or should not be devoured each year. At its most convenient, they print a handy business card sized reference guide which you can carry around in your wallet. Impress your animal loving, patchouli wearing date when you take her out to your favorite seafood restaurant and tell her what she is not allowed to order off the menu. In all seriousness though, it is incredibly handy, they will send you one or more for free, and those of you with iPhones can browse away right at the dinner table by clicking here.
Central US Guide

They have a number of different guides tailored to the tastes of different regions of the country. Out of curiousity, does Zooillogix even have any readers in the Midwest besides for me?
I’m sure some of our fellow bloggers beat us to this (Blogfish - I’m awaiting your snarky remark) but I do want to bring attention to it all the same. Particularly because they have an extensive partner program that provides free printed guides to local organizations that support the cause and have a means to distribute them. If you have a local zoo, aquarium, nature center or similar organization that might be interested in getting involved, point them in Seafood Watch’s direction.