Japan Successfully Retrieves Rare-Earth-Rich Seabed Mud from 6-km Depth

Japan has announced that it has successfully retrieved rare-earth-rich seabed mud for the first time from depths of around 6 kilometres (4 miles), marking a major technological and strategic milestone in deep-sea resource exploration.

The achievement came during a test mission near Minamitori Island, as part of Tokyo’s efforts to reduce its dependence on China for critical minerals, amid concerns over supply restrictions by Beijing. A Japanese scientific drill ship departed on January 12 for the remote island to explore deposits of rare-earth-bearing mud beneath the ocean floor.

The month-long mission was carried out by the test vessel Chikyu near Minamitori Island, located about 1,900 km southeast of Tokyo. The operation represents the world’s first successful attempt to continuously lift rare-earth-rich seabed mud from such extreme depths directly to a ship.

According to Japanese authorities, the recovered mud is believed to contain valuable rare earth elements such as dysprosium and neodymium, which are crucial for electric vehicle motor magnets, as well as gadolinium and terbium, used widely in advanced electronics and other high-tech applications.

The breakthrough strengthens Japan’s push for resource security and positions the country at the forefront of deep-sea mining technology, even as environmental and regulatory debates around seabed extraction continue globally.