Key Facts and Data Points

  • Project: Experimental extraction of REEs from the deep sea using the scientific drilling vessel Chikyu.
  • Depth: Approximately 6,000 metres below sea level.
  • Location: Near Minami Torishima, a remote Japanese island within Japan’s Exclusive Economic Zone (EEZ) in the Pacific Ocean.
  • Estimated Reserves: Over 16 million tonnes of rare‑earth deposits, sufficient for 730 years of dysprosium and 780 years of yttrium.
  • Global REE Supply: China accounts for ~66 % of mined REE ore and >90 % of refined REE output.
  • Deep‑Sea Mining Methods:
  • Collection of polymetallic nodules.
  • Extraction of seafloor sulphide deposits.
  • Stripping of cobalt‑rich crusts.
  • Environmental Concerns: Potential disruption of marine ecosystems, loss of biodiversity, and sediment plumes.
  • Regulatory Body: International Seabed Authority (ISA) is drafting a global framework for mining in international waters.

Background and Context

  • Strategic Imperative: Japan’s high-tech industries (electronics, EVs, wind turbines, defence) depend heavily on REEs, prompting a push to diversify supply away from China.
  • Deep‑Sea Mining: Represents a frontier technology; the ocean floor below 200 m covers ~2/3 of the Earth’s surface, holding vast mineral wealth yet largely untapped.
  • International Landscape: Apart from Japan, countries like China, the USA, India, and several EU members are exploring deep‑sea mining pilots.

Significance for India / Governance / Policy

  • Supply Security: India, a net importer of REEs, must monitor such initiatives to assess alternative sources and reduce strategic vulnerability.
  • Policy Response: Need for a National Deep‑Sea Mining Policy, investment in R&D, and participation in ISA deliberations.
  • Environmental Governance: Aligns with India’s commitments under UNCLOS, Paris Agreement, and Biodiversity Convention to safeguard marine ecosystems.
  • Strategic Partnerships: Potential collaboration with Japan on technology transfer, joint exploration, and capacity building.

Related Constitutional / Legal Provisions

  • UNCLOS (United Nations Convention on the Law of the Sea) – Provides the legal basis for EEZ rights and the establishment of the ISA.
  • The Indian Ocean Rim Association (IORA) – Platform for regional cooperation on marine resources.
  • National Mineral Policy 2019 – Encourages responsible mining and promotes strategic minerals.

Environmental & Geopolitical Implications

  • Ecological Risks: Disturbance of benthic habitats, possible extinction of endemic species, and alteration of carbon sequestration processes.
  • Geopolitical Shift: Diversification of REE sources could alter the China‑Japan‑India strategic triangle, influencing trade, defence procurement, and diplomatic negotiations.
  • Regulatory Challenges: Balancing economic interests with environmental safeguards within the ISA framework.

Conclusion

Japan’s deep‑sea REE pilot is a bellwether for future resource security strategies. For India, it underscores the urgency of developing indigenous capabilities, engaging in multilateral governance, and ensuring that environmental considerations are integral to any deep‑sea mining agenda.