This dive site is known as Le Fer à Cheval, or 'The Horseshoe' in English, named after a unique natural tunnel carved into the coral. This submerged passage acts as a vital connection, allowing the waters of the lagoon to merge with the open ocean. Divers navigate through this distinctive horseshoe-shaped structure, experiencing a rare geological formation that serves as a vibrant ecosystem. There's no specific historical account provided, but its natural formation makes it a geological wonder, inviting exploration.
The marine life here is abundant and captivating. On the ocean side of the tunnel, divers can witness white-tipped sharks peacefully sleeping on the sandy bottom, a truly remarkable sight. The unique heteroconger eels, commonly known as garden eels, dance gracefully from their burrows, adding to the site's allure. Additionally, pipefish, close relatives of the seahorse, can be spotted, offering opportunities for macro enthusiasts. The coral formations creating the tunnel itself also host various smaller reef fish and invertebrates.
The best time to visit Le Fer à Cheval typically aligns with the dry season in French Polynesia (May-October), offering optimal weather and water conditions. Divers should be aware of potential moderate currents, especially where the lagoon meets the ocean, and plan their dive accordingly. Freedivers with appropriate experience can explore the shallower sections of the tunnel, but the primary attractions like the sleeping sharks are found at typical scuba depths. This site offers a fantastic combination of unique topography and diverse marine encounters.
