Fish farms promise to grow massive amounts of seafood to feed a hungry planet, and to do it ethically. But what’s good for the humans isn’t always good for the salmon.

This episode was produced by Avishay Artsy, edited by Miranda Kennedy, fact-checked by Kelli Wessinger and Laura Bullard, engineered by David Tatasciore, and hosted by Noel King.

The seafood counter at a Ralphs grocery store in Los Angeles. Photo by Avishay Artsy/Vox.

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