Today, three ocean conservation groups in the United States - the Blue Ocean Institute , the Environmental Defense Fund , and the Monterey Bay Aquarium  - will each be releasing sushi fish selection guides. They all seem to be printed guides that you have to order (small quibbles: Why not a downloadable PDF so people can start using it immediately? (It seems PDFs are available if you look hard enough. (thanks Avoir!)) Also, why 3 separate guides?) but if you are a sushi aficionado and are concerned about the sustainability of safety of the fish used as sushi neta, you may want to give one of them a look. See the press release here .
The Monterey Bay Aquarium (in Monterey, California), which as far as aquariums go is one of the coolest places on earth, already has a very extensive Seafood Watch database  as well as regional (American only of course) seafood guides you can order, as well as a mobile phone site . They are also having a National Sushi Party  event on Facebook. You can even sign up to be a Seafood Watch Advocate  if you are politically inclined (though as of this writing, the page says they have run out of Advocate Kits.)
Having briefly worked at a sushi restaurant, I have doubts as to how much effect the advocacy/politicking method with have on most restauranteurs. But what would definitely work is voting with your money; if you really want to make a statement, stop scoffing down the tuna, yellowtail and eel, and be more adventurous and varied in your sushi selection.
I have repeated this several times on these pages: Sushi does not mean ‘something with fish’. (Do remember that a key to good sushi is the quality of the rice, as much as the neta that goes on/in it.) You could even have a very nice sushi meal by going fishless. When my mother first succumbed to stress-induced digestive system problems, she could literally only stomach vegetable-based sushi (and she managed a sushi restaurant!) but she didn’t feel she was missing anything. Here are some non-fish sushi neta:
…besides the usual suspects of tuna, fatty tuna, yellowtail, salmon, eel? Let us know what it is, and why!