Shinkei Systems built Poseidon, a refrigerator-sized robot that scans each fish with computer vision, locates the brain, and kills it instantly.
The machine is called Poseidon, and fishermen install it directly on their boats.
The robot is only the entry point.
Whether buyers will pay extra for humanely killed fish the way some now do for humanely raised beef remains an open question.
The spoilage issue ties into a detail of the American seafood supply chain that surprises most people.
Read the complete breakdown, fixes and what happens next.