Pressure from Wal-mart is leading to cleaner shrimp farming in Thailand. To keep selling shrimp to Wal-mart, shrimp farmers are actually reducing the harm caused by their farms.
I like the approach. It's more valuable to fix bad farms than drop bad shirmp and switch to better sources. Wal-mart's commitment to sustainable seafood includes a pledge that they'll work with suppliers to reduce impacts and here's some evidence that it's working.
Not everyone is happy. Some shrimp farmers say that the process favors big operations with lots of capital, and environmentalists believe that the new cleaner farms still have environmental impacts. Some people support wild-caught shrimp, claiming that it's better than farming, but shrimp trawling is not exactly an ocean-friendly activity.
Yeah, I wish there was more progress too. But here's an important question..who is doing more than Wal-mart to clean up shrimp farms on such a large scale?