In a groundbreaking technological achievement, Japan has successfully retrieved deep-sea sediment containing rare earth minerals from the seabed near Minamitorishima Island, marking a significant advancement in undersea resource extraction. The operation, conducted at an unprecedented depth of nearly 6,000 meters by the drilling vessel Chikyu, represents the world’s first successful test retrieval of rare earth elements from such extreme marine environments.
Prime Minister Sanae Takaichi announced the accomplishment via official channels, characterizing it as “a first step toward industrialization of domestically produced rare earth in Japan.” The breakthrough forms part of Japan’s broader Strategic Innovation Promotion Program, which has been conducting comprehensive research and feasibility studies on rare earth deposits around the remote island since their discovery in the 2010s.
This development carries substantial geopolitical significance given China’s current dominance in global rare earth production, particularly heavy rare earths essential for manufacturing high-strength magnets used in defense systems and electric vehicles. Deputy Chief Cabinet Secretary Masanao Ozaki emphasized the achievement’s importance “from the perspectives of economic security and comprehensive ocean development.”
While technical details including precise mineral concentrations require further analysis, officials confirmed the successful retrieval occurred on February 1st following the Chikyu’s departure last month and arrival at the mining site on January 17th. The project now moves toward demonstrating full industrial viability, encompassing the complete process from seabed extraction through separation and refining operations.
The advancement occurs amid heightened regional tensions and follows China’s recent suspension of dual-use exports to Japan, raising concerns about potential restrictions on rare earth shipments. Japanese researchers estimate the Minamitorishima deposits contain high-concentration rare earths sufficient to supply global demand for hundreds of years, potentially reshaping global supply chains for critical minerals.