 |
| Japan deep sea rare earth mining |
Japan Initiates World’s First Deep-Sea Rare Earth Mining Test
Japan deep-sea rare earth mining has begun with the government-backed vessel Chikyu targeting seabed mud near Minamitori Island. This effort aims to reduce dependency on Chinese supplies and secure critical mineral access. Meanwhile, geopolitical tensions and Chinese export restrictions accelerate Tokyo’s domestic resource initiatives.
The mining vessel will study seabed mud at roughly four miles depth. If successful, it will mark the first global attempt to lift rare-earth-bearing mud directly from the ocean floor. As a result, Japan could achieve partial self-sufficiency in rare earth elements critical for electronics, EV batteries, and defense applications.
Strategic Implications for Supply Security and Industrial Demand
Japan deep-sea rare earth mining reflects a strategic response to China’s tightened export controls. Historically, Japan imported nearly 90% of its rare earths from China but reduced reliance to 60% through overseas partnerships, recycling programs, and manufacturing optimization. In contrast, this new domestic initiative could further stabilize supply chains and mitigate geopolitical risk.
The project plans a full-scale demonstration by February 2027, following successful testing. Mud will be dewatered near Minamitorishima and transported to mainland Japan for separation and refining. This method reduces volume by 80%, allowing more efficient handling while maintaining industrial-grade purity standards.
In addition, the government has invested approximately ¥40 billion ($256 million) since 2018, highlighting Japan’s commitment to rare earth independence. However, Chinese naval presence near Minamitorishima underscores regional tensions and the strategic sensitivity of seabed mining operations.
ScrapInsight Commentary
Japan’s deep-sea rare earth mining initiative could reduce reliance on China, stabilizing domestic supply for high-tech and defense sectors. Price volatility may persist until production scales, but long-term recycling and local extraction strategies strengthen Japan’s circular economy stance.
