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UN Ocean Conference Opens in Nice as France Accelerates Marine Protections

The summit is set to adopt a nonbinding Nice Declaration including expanded marine reserves, a moratorium on deep-sea mining, increased ocean funding.

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Un manifestant participe à la Marche Bleue sur la Promenade des Anglais avant la Conférence des Nations unies sur les océans, dans la ville de Nice, sur la Côte d'Azur, le 7 juin 2025

Overview

  • UNOC3 officially opened in Nice on June 9 with over 60 heads of state and government gathered to address ocean threats like overfishing, pollution and climate change.
  • France announced plans to create zones of strong protection in 14% of its waters by 2030, with 4% enacted as no-take areas by 2026.
  • Donald Trump’s administration declined to send a delegation and has authorized deep-sea mining in international Pacific waters, a move rejected by France as the summit began.
  • Several countries, including Samoa and the United Kingdom, are poised to unveil new marine protected areas and bans on bottom trawling to push global protection above 10%.
  • Delegates will seek ratifications for the 2023 high seas treaty and aim to secure the remaining signatures needed for its entry into force before the end of the year.