French Polynesia Creates World’s Largest Ocean Sanctuary Spanning 4.8 Million Square Kilometers

French Polynesia Creates World’s Largest Ocean Sanctuary Spanning 4.8 Million Square Kilometers

By
Casey Lee

Publish Date:June 12, 2025

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📰 The quick summary: French Polynesia has created the world’s largest marine protected area covering 4.8 million square kilometers, with over a million square kilometers designated as highly or fully protected ocean zones.
📈 One key stat: The new marine protected area covers 4.8 million square kilometers, including 1.086 million square kilometers of highly or fully protected ocean, an area twice the size of mainland France.
💬 One key quote: “We have been managing this EEZ wisely for centuries, using the techniques that were passed on from the generations before us and our ancestors,” Brotherson told Time.

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1️⃣ The big picture: French Polynesia has established the world’s largest marine protected area, covering its entire exclusive economic zone of 4.8 million square kilometers in the Pacific Ocean. This landmark conservation effort includes 1.086 million square kilometers of highly or fully protected ocean areas where activities like extractive fishing and mining will be prohibited. French Polynesian President Moetai Brotherson announced this achievement at the United Nations Ocean Conference, emphasizing the territory’s longstanding tradition of ocean stewardship. The initiative represents a significant step forward in global marine conservation and reflects strong local support, with 92% of French Polynesians favoring the creation of new protected areas.

2️⃣ Why is this good news: Marine life including sharks, whales, sea turtles, and some of the world’s healthiest coral reefs will now receive unprecedented protection. The initiative significantly increases the proportion of French waters under protection to 78%, setting an inspiring example for other nations to follow in marine conservation. Local communities benefit as the protections align with traditional cultural values while preserving resources that sustain livelihoods and food security. The designated artisanal fishing zone allows traditional line fishing to continue, balancing conservation with local needs. This ambitious effort demonstrates the type of bold action needed globally to restore ocean health and biodiversity.

3️⃣ What’s next: French Polynesia plans to designate an additional 500,000 square kilometers as highly protected area by World Ocean Day 2026. The territory will strengthen its fisheries management plans and increase public participation in conservation efforts. French President Emmanuel Macron has pledged his government’s support in monitoring the newly announced protected areas.

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Read the full story here: Mongabay – French Polynesia creates world’s largest marine protected area

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