The key is to eat local seafood that comes from fishermen who live in your community--they have just as much at stake in terms of viable fisheries and are generally active in conservation... although it may not toe the agenda-driven narrative coming from PEW and NOAA.
You want to help the world's oceans and fish populations? Lobby the UN to stop turning a blind eye to fishing fleets from 3rd and 2nd world countries and, most importantly: ASIA. Lobby your congressmen to join those who want to keep foreign fishing fleets out of our Federal Waters. Stop eating imported seafood of ANY kind.
^^^This...goddamn asians and their shark fin soup.