15,000 kilometres from Paris

Back in July 2022, the Paris 2024 Olympic Organising Committee unveiled a new, emblematic slogan for the Olympic Games: “Ouvrons Grand Les Jeux” – Let’s Open Up the Games. Two years later, as 206 nations competed before an audience of about 5 billion viewers, one of the most symbolic dimensions of this motto received limited attention. Held between 27th July and 5th August in Teahupoʻo, Tahiti, 15,000 kilometres from Paris, the surfing competitions illustrated the enduring connection between a metropole and its most distant oceanic territory. Beyond sport and diplomacy, scientific collaboration has long shaped this relationship. Institutions such as Ifremer (Institut français de recherche pour l’exploitation de la mer) have maintained research programmes in French Polynesia for decades. Investigations into the region’s complex marine ecosystems take place within what the United Nations has described as the world’s largest marine protected area (MPA). Against this backdrop of renewed visibility and interconnectedness, French Polynesia emerges both as a stage of global celebration and as a site of critical environmental decision-making.

The Rich Seas

Tahiti’s role as the host of Olympic surfing competitions underscores its prominence as French Polynesia’s cultural, economic, and scientific centre. The coral reefs fringing the island and its lagoon support exceptional marine biodiversity. According to the Pew Bertarelli Ocean Legacy group, 21 shark species, 176 coral species and 1,024 recorded fish species inhabit these waters. Beyond the shallow shelves, French Polynesia’s Exclusive Economic Zone – spanning nearly 5 million square kilometres – contains significant deposits of polymetallic (manganese) nodules and cobalt-rich crusts. Although extraction has not yet begun, mining contractors anticipate the International Seabed Authority’s (ISA) more open regulations.

Ecology and Extraction

As global demand for transition-critical minerals accelerates, the French Ministry of Ecological Transition states that Tahiti’s reefs serve as baseline environments for climate and biodiversity research. Seabed mining not only critically devastates habitats but also erases the scientific continuity needed to understand how marine systems respond to climate change.

The Project

Although no commercial deep-seabed mining has yet commenced, small-scale tests are underway. The ISA’s operational regulatory framework has boosted the confidence of industry representatives such as the Deep Sea Mining Alliance (DSMA). Their members have asserted that mining can address an expected shortage of transition materials essential for renewable energy technologies. This potential centres on what the ISA terms “the Area”; a zone encompassing roughly 54% of the world’s oceans. Since 2025, 31 fifteen-year contracts have been granted to 22 state-sponsored contractors, including Russia, China, and South Korea.

Clarion–Clipperton

Extraction activities in these manganese-rich regions extend to depths of 4,000 to 6,000 metres, with significant concentrations in the Clarion–Clipperton Zone (CCZ). The CCZ is a 6-million-square-kilometre undersea fracture in the central Pacific that has emerged as the focal point of commercial deep-sea mining. Even limited-scale extraction disrupts seabed habitats. In the CCZ, this has already resulted in a 32% decline in species diversity. For small island territories, like French Polynesia, whose cultural and economic survival depends on ocean health, such impacts could undermine long-term sustainability strategies. Located roughly 5,400 kilometres from Tahiti, the CCZ illustrates the growing prioritisation of technological and resource extraction interests in deep-ocean environments.

Legal Framework and Jurisdictions

Historically, French Polynesia’s political identity has evolved through several stages of administrative reclassifications. First, it was a Territoire d’Outre-Mer (TOM), then redefined as a Collectivité d’Outre-Mer (COM). Its final conversion would be to a Pays d’Outre-Mer (POM), established by the 2004 Organic Law of the French Constitution. The refined 2004 law defines an organisational entity distinct from that of ordinary French law. For French Polynesia, the POM status grants significant administrative autonomy under Article 74 of the French Constitution. Recent legal developments in the Organic Law have expanded the Non-Self-Governing Territory’s local capacity for economic and cultural initiatives. Yet ultimate sovereignty – including over strategic mineral resources – remains with the French Republic. Upon the announcement of the ambitions for seabed mining, the sitting French Polynesian President, Moetai Brotherson, has stated the goal to hold a referendum on Polynesian independence. Already today, the Polynesian president has new powers for the protection of the vast area known as Tainui Atea, encompassing almost all 1.1 million square kilometres of French Polynesian waters. This constitutes a momentous change in ecological sovereignty.

Political Support

French political support for Tainui Atea is critical. President Macron’s hailing of the world’s largest marine protected area, Brotherson worries, may very well change under a new president. It should also be mentioned that the Presidency of French Polynesia in the context of being a POM carries less authority than the role of High Commissioner. Appointed by the Republic itself, the authority of the High Commissioner supersedes the powers of the Polynesian president. Strategic decisions regarding critical minerals, therefore, ultimately belong to France. As the son-in-law of pro-independence politician Oscar Temaru, Brotherson’s efforts reflect a broader struggle between the French Republic and its overseas territories. The riots in New Caledonia in May 2024 exemplify this complicated relationship. In metropolitan France, the growing popularity of the country’s right-wing party, the National Rally, may likewise pose more challenges.

Stewardship

At a time when technological ambition reaches unprecedented depths, the reefs of Tahiti signal that the ocean is not an inert repository of resources but a sovereign, non-human actor that sustains planetary life. Entrusted with its vast marine territories, France now holds the cards to determine whether Pacific waters remain sanctuaries of biodiversity or become sites of irreversible transformation.