Right now there are a lot of NGOs and organizations that offer this certification. For example, at SweetSpring Salmon in the State of Washington--I designed their farm--they have the first double green certification from the Monterey Bay Aquarium, so they're fully certified under that program. But there are other programs, so yes, the answer to your question is a very big yes.
On November 24th, 2011. See this statement in context.