Several Canadian Organizations Urge Decisive Action on Unilateral Deep-Sea Mining

Several Canadian Organizations Urge Decisive Action on Unilateral Deep-Sea Mining

MiningWatch Canada – Blog/Medium
MiningWatch Canada – Blog/MediumApr 28, 2026

Key Takeaways

  • Canadian NGOs demand halt to The Metals Company's deep‑sea mining plans
  • They cite UNCLOS obligations and illegal status of non‑ISA mining
  • Call for a legally binding moratorium under Article 145 of UNCLOS
  • Highlight global support: 70+ firms, 1,000 scientists oppose deep‑sea mining
  • Emphasize risk to marine biodiversity and BBNJ treaty implementation

Pulse Analysis

Deep‑sea mining has emerged as a frontier for extracting critical minerals, but the legal framework remains anchored in the United Nations Convention on the Law of the Sea (UNCLOS) and the International Seabed Authority (ISA). While the ISA is tasked with ensuring that seabed exploitation benefits humanity and protects marine ecosystems, companies like The Metals Company have pursued permits through national legislation such as the U.S. Deep Seabed Hard Mineral Resources Act. This approach sidesteps the multilateral licensing process, raising questions about the legitimacy of any extraction that occurs outside ISA oversight.

In Canada, the issue has become a political flashpoint. A letter signed by dozens of NGOs was addressed to Prime Minister Mark Carney and key ministers, demanding that Canada enforce UNCLOS provisions and prevent its nationals from engaging in unauthorized mining. The signatories argue that Canada, as a party to UNCLOS, must ensure compliance with Article 139 and Article 137, which forbid unilateral claims on the international seabed. Their appeal also references the newly ratified Biodiversity Beyond National Jurisdiction (BBNJ) treaty, underscoring the need for a precautionary pause to safeguard marine habitats before any commercial activity proceeds.

Globally, momentum is building against deep‑sea mining. Over 70 major corporations, nearly 1,000 marine scientists, and a coalition of indigenous and civil‑society groups have called for a moratorium, citing the technology’s unproven economic viability and its potential to cause irreversible damage to ocean ecosystems. If Canada aligns with this emerging consensus, it could shape future investment patterns, encouraging firms to focus on land‑based recycling and renewable energy solutions rather than risky offshore extraction. Conversely, a failure to act may expose Canada to legal challenges and reputational risks in the international community.

Several Canadian organizations urge decisive action on unilateral deep-sea mining

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