We keep hearing about the health benefits of eating fish, but at the same time, we're warned that eating too much fish could expose us to unsafe levels of mercury and PCBs. There's also overfishing, pollution and habitat destruction to consider. So what's a responsible consumer to do?

By following a few guidelines from the Environmental Defense group's Oceans Alive project, you can minimize your risk and learn how to make smart choices that are good for you and for the oceans.

NEXT: Risky business