Should We Mine the Deep-Sea?

What It Covers

Deep sea mining could provide battery metals for electric vehicles without land-based mining's environmental damage, but scientists warn extracting polymetallic nodules from ocean floors risks destroying unexplored ecosystems and disrupting climate regulation.

Key Questions Answered

• •Battery metal demand: Electric vehicle production requires 40 times more batteries by 2040 than today. Current land-based cobalt mining employs 40,000 children in Democratic Republic of Congo, while nickel extraction contaminates Indonesian waterways and destroys rainforests.
• •Nodule abundance: The Clarion Clipperton Zone between Hawaii and Mexico contains more cobalt than all terrestrial reserves combined. These golf ball-sized rocks also contain manganese, copper, and nickel concentrated on the seafloor over millions of years.
• •Environmental risks: Proposed mining uses 300-ton vacuum machines that clear-cut seafloors, creating sediment plumes and noise pollution. Scientists warn this could disrupt carbon sequestration in one of Earth's largest carbon sinks and damage whale communication patterns.
• •Selective harvesting technology: Impossible Metals develops hovering robots with AI-powered arms that identify and collect individual nodules while leaving 25-50 percent behind. This approach avoids touching the seafloor but remains years from commercial deployment beyond current vacuum methods.