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A recent study in Nature revealed that after more than 40 years, a section of the Pacific Ocean seabed that was mined in 1979 has not recovered

Concerns about the long-term ecological effects of mining have been raised by a recent study published in Nature that shows that a portion of the Pacific Ocean seabed that was mined in 1979 has not recovered even after more than 40 years

Deeksha Upadhyay 31 March 2025 19:05

A recent study in Nature revealed that after more than 40 years, a section of the Pacific Ocean seabed that was mined in 1979 has not recovered

Cobalt, nickel, lithium, rare earth elements, gold, and copper are the resources that are targeted because they are essential for electronic devices, solar panels, wind turbines, and electric cars.

Distribution: - The Pacific Ocean's Clarion-Clipperton Zone contains the most abundant deposits. - Additional resources are found close to seamounts and hydrothermal vents.

Technological Frontier: The majority of operations are still in the exploratory stage, and current techniques are still primarily experimental.

The state of deep-sea mining today:

  • Limited-scale testing has been conducted; commercial mining has not yet begun.
  • The finalization of the ISA Regulation is scheduled for 2025.
  • UNCLOS oversight: The "common heritage of mankind" refers to the abundance of minerals found in the high seas.

Deep-sea mining advantages include:

Waste is frequently released back into the ocean after processing on surface vessels.

Resources Targeted: Cobalt, nickel, lithium, gold, rare earth elements, and copper—essential for electronic devices, solar panels, wind turbines, and electric cars.

Current Status of Deep-Sea Mining:

  • Only small-scale experiments have been conducted thus far; commercial mining has not yet begun.
  • The ISA will soon regulate, with final regulations expected to be finalized by 2025.
  • High-seas mineral resources are referred to as the "common heritage of mankind" under UNCLOS supervision.
  • Distribution: The Pacific Ocean's Clarion-Clipperton Zone contains the most abundant deposits. Seamounts and hydrothermal vents are nearby sources of additional resources.
  • Technological Frontier: Current techniques remain largely experimental, with most operations still in the exploratory stage.

Deep-sea mining advantages include:

Crucial Mineral Supply: It could meet the growing demand for green technologies and electric cars worldwide. An alternative to land mining, it aids in avoiding the freshwater contamination and deforestation that come with land mining.

Controlled Labor Conditions: Human rights violations that are common in land-based mining operations may be lessened by offshore mining.

Strategic Security: It reduces reliance on land reserves that are sensitive to geopolitics.

For example, the shift to clean energy is expected to increase the demand for cobalt by 400–600% by 2040. High Concentration of Resources: In concentrated areas, polymetallic nodules offer rich deposits.

Path Ahead:

Research & Scientific Pause First: Until solid ecological data is available, impose a precautionary moratorium.

Create Inclusive Regulations: ISA is required to draft laws that are open, enforceable, and share benefits fairly.

Encourage the circular economy Increase battery recycling and extract minerals from mine tailings and e-waste.

Investigate Alternative Technology: Encourage LFP and sodium-ion batteries, which lessen the need for cobalt and nickel.

International Cooperation: For sustainable ocean governance, involve all relevant parties, including scientists, legislators, and coastal countries.

The paradox of deep sea mining is that it offers resources for renewable energy but also runs the risk of causing irreparable ecological harm. The world needs to strike a balance between planetary responsibility and economic ambition. Ocean ecosystems can only be protected while achieving global energy goals through a precautionary, equitable, and science-led approach.

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