Our country's seaweed industry has been recognized for its unparalleled competitiveness based on quality and trust, going beyond a simple fishery to become a leading export industry and national strategic industry of K-Food that leads global markets. In this context, the recent suspicions that seaweed believed to be an invasive species of nori is being illegally farmed and distributed in some regions is a serious warning signal that threatens the entire seaweed industry. This is a complex crisis that simultaneously shakes the three pillars of food, industrial order, and ecosystem conservation. The essence of the problem goes beyond legality. The spread of invasive seaweed disrupts the ecosystem, distorts market order, and causes other issues.