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🪸 Coral Reef Discovered Off the Coast of Tahiti

Science & Nature France Europe

🪸 Coral Reef Discovered Off the Coast of Tahiti
Deep-sea coral ecosystem in French Polynesia


🕐 2 min read · Updated 2 Apr 2026 at 21:56
📌 Fast Facts
  • Discovered in late 2021 by a UNESCO-led scientific mission
  • Extends approximately 3 kilometers long and 30–65 meters wide
  • Located in the ocean's twilight zone at depths of 30–65 meters
  • Dominated by giant rose-shaped corals, some up to 2 meters in diameter

In late 2021, a UNESCO-led scientific mission discovered a massive and pristine coral reef off the coast of Tahiti in French Polynesia. This reef is particularly noteworthy due to its location in the ocean's "twilight zone," a dimly lit area between 30 and 120 meters deep, typically considered inhospitable for coral growth due to limited sunlight. The reef's excellent condition and scale challenge established understanding of deep-sea coral ecosystems ...

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