The head of the International Seabed Authority has warned that U.S.-backed deep-sea mining plans, supported by Donald Trump, could face legal challenges as global tensions rise over ocean-floor mineral extraction regulations.

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• The International Seabed Authority chief has described Trump-backed deep-sea mining initiatives as unlawful, warning of potential global litigation against involved companies.
• Deep-sea mining firms aim to extract valuable polymetallic nodules containing manganese, cobalt, and nickel from the ocean floor for commercial use.
• The ISA, a United Nations-backed regulatory body, is responsible for establishing rules governing mineral extraction in international waters.
• The authority is currently developing the first comprehensive legal framework for the emerging and highly controversial deep-sea mining industry.
• Companies pursuing seabed mining argue the activity could generate billions in revenue due to rising global demand for critical minerals.
• Critics and regulators highlight environmental risks, including irreversible damage to fragile deep-ocean ecosystems and biodiversity loss.
• The ISA leadership warned that proceeding without agreed global regulations could trigger widespread legal disputes across multiple jurisdictions.
• The issue reflects growing international disagreement over resource exploitation in areas beyond national maritime boundaries.