• seafoodwatch.org: Download pocket guides to sustainable seafood at the website of California-based Seafood Watch, an arm of the Monterey Bay Aquarium.

• seafoodguide.org: Click on the flags of 19 countries for lists of local seafood, then click on names of species to see if they're sustainable or imperiled or if the jury's still out.

• blueocean.org: Access a sustainable-seafood text-messaging service or download a guide to your cellphone at the website of the Blue Ocean Institute, a marine conservation organization.