Its mission is simple: doing coral cuttings to recreate coral reefs. While his Tahiti Bioroche brand is responsible for the installation process, the Espace Bleu company that he created in 2000 maintains the coral reefs.
Denis at first used the concrete reef method, which consists of fixing coral cuttings on concrete. However, this method does not help the coral to resist stress and requires waiting 15 years to have a convincing result. Denis therefore decided, in 2007, to begin using the Biorock method, an innovative method developed by the Global Coral Reef Alliance, an organization dedicated to scientific research and the sustainable management of the ecosystem. The corals are fixed on metal structures charged by a low-voltage electrical current through a connection to solar panels. This method, used today at the InterContinental Bora Bora Le Moana Resort, allows the coral reefs to be released into the natural environment after only two years!