Sébastien (L), a bomb disposal diver and leader of the Caliope 26.1 mission and Member of the French Navy installs an underwater stereoscopic photogrammetry camera on the articulated arm of the "ROV C 4000," a remotely operated vehicle manufactured by the French company LD Travocean and designed for seabed exploration, on April 7, 2026, on the deck of the (BSAA) Jason, chartered for an archaeological mission on the wreck of the CAMARA 4 off the coast of Ramatuel, in southeastern France. Over the course of three days, teams from the French Navy's Center for Human Diving and Underwater Operations (CEPHISMER) and the Department of Underwater and Submarine Archaeological Research (DRASSM Ministry of Culture), along with members of the French Navy, are participating in a new exploration mission to map the site and collect samples of ceramics found in a wreck believed to be a 16th-century merchant ship which lies at a depth of 2,500 meters, making it the deepest wreck ever discovered in French waters. (Photo by Thibaud MORITZ / AFP via Getty Images)