Question: Under the United Nations Convention on the Law of the Sea (UNCLOS), what zone grants a coastal state exclusive rights to explore and exploit marine resources? - Parker Core Knowledge

Understanding the Context

The Exclusive Economic Zone extends up to 200 nautical miles from a coastal state’s baseline, usually measured along the low-water line. Within this zone, the coastal state holds exclusive sovereign rights over natural resources—both living and non-living—found in the water column and seabed. This includes:

• Living resources: Fish, shellfish, and other marine life.
  
• Non-living resources: Oil, gas, minerals, and seabed minerals beyond national jurisdiction.

While foreign vessels retain the right to navigate and fly over the EEZ freely, the coastal state has authority over exploration, extraction, conservation, research, and environmental protection within its EEZ.

Legal Basis in UNCLOS

Key Insights

Article 56 of UNCLOS explicitly grants coastal states sovereign rights in their EEZ for resource-related activities. Unlike territorial seas—where full sovereignty extends to all waters—the EEZ strikes a balance between a state’s rights and the high seas freedoms. This zone allows coastal nations to manage sustainable development of marine resources without full territorial control, supporting economic growth while respecting international law.

Rights vs. Responsibilities

While the EEZ confers rights to exploit resources, coastal states also bear obligations under UNCLOS to:

• Promote the sustainable use of living marine resources.
  
• Prevent overfishing and environmental degradation.
  
• Cooperate in managing shared or migratory stock with neighboring states.
  
• Protect and preserve the marine environment.
  
• Allow scientific research by other nations under agreed conditions.

These responsibilities ensure that exclusive rights balance ecological sustainability with economic interests.

Final Thoughts

Comparison with Other Maritime Zones

• Territorial Sea (up to 12 nautical miles): Full sovereignty applies, including over resource exploitation.
  
• Contiguous Zone (up to 24 nautical miles): Limited enforcement powers related to customs, immigration, and pollution.
  
• Exclusive Economic Zone (up to 200 nautical miles): Exclusive exploitation rights, but with shared international freedoms.
  
• High Seas and Area Beyond National Jurisdiction: No state owns these zones; governed by common heritage principles or international cooperation.

Implications for Coastal States and Global Fisheries

The EEZ framework has been transformative for coastal states—empowering countries, especially developing nations with extensive coastlines, to harness marine resources for energy, food security, and economic development. However, disparities in enforcement capacity and technical capability challenge uniform resource management globally.

Conclusion

The Exclusive Economic Zone under UNCLOS represents a cornerstone of modern marine governance. By granting coastal states exclusive rights to explore and exploit marine resources within 200 nautical miles, UNCLOS enables nations to manage and benefit from ocean wealth sustainably—while upholding international law and maintaining essential freedoms of navigation and research. As global ocean pressures grow, the EEZ remains vital for balancing sovereignty, conservation, and shared responsibility on the world’s seas.