Seaweed is one of Indonesia's superior commodities in the global market. The potential for seaweed production itself can be used to gain a competitive position in the global market. The purpose of this research is to analyzed the comparative advantage and competitive advantage of Indonesian seaweed in the international market and analyzed the market structure of seaweed in the international market. Indonesia's seaweed in the rising star position marked by China and Spain, which means both

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... ies are the potential market to develop. The falling star position is marked by France, South Korea, Chile, and Vietnam, which are unwanted positions but still available for market share improvement. The last opportunity position is marked by Philippines and USA, means that there were a declining export activity and effected to the decreased competitiveness. The retreat position is marked in Japan and UK, which is the unwanted market position. The world seaweed market structure is in the oligopoly market.