Home / Environment / Japan Deep Sea Mining: Eco Risks vs Rare Earths
Japan Deep Sea Mining: Eco Risks vs Rare Earths
16 Jul
Summary
- Japan aims to extract rare earths from seabed mud near Minamitorishima.
- Mining trials are scheduled for 2027, following seabed sediment recovery.
- Environmental risks and international obligations must be addressed.
Japan is pressing forward with plans to develop rare-earth extraction from seabed mud in its exclusive economic zone near Minamitorishima. Following successful recovery of rich sediment, a full-scale mining trial is anticipated in 2027.
This initiative is framed as a strategy to enhance Japan's supply chain resilience and diversify its rare-earth sources, vital for clean energy and advanced technologies. However, the project raises significant environmental concerns.
Deep-sea mining intervenes in fragile ecosystems, potentially creating harmful sediment plumes and discharging pollutants. International law, under the UN Convention on the Law of the Sea, mandates that resource development must not harm the marine environment or other states.
Consequently, rigorous, science-based, and independently reviewed environmental impact assessments are essential. The potential for slow ecological recovery in deep-sea environments necessitates a precautionary approach.
Concerns are high that Japan's venture could mirror past environmental governance issues, such as the discharge of treated Fukushima wastewater. Critics urge international scrutiny and robust monitoring to prevent externalizing ecological risks.
Addressing these challenges requires independent scientific reviews, full disclosure of environmental assessments, and responsible market practices. Japan's pursuit of supply chain security must not compromise the Pacific Ocean's health.
