Sébastien (center), a bomb disposal diver and leader of the Caliope 26.1 mission and Member of the French Navy and specialized team members install 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 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, on April 7, 2026. 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)

This photograph shows a view of the "ROV C 4000," a remotely operated vehicle manufactured by the French company LD Travocean and designed for seabed exploration, launched for an exploratory dive to a depth of 2,500 meters from 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 on April 7, 2026. 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)

Franca Cibecchini, a maritime archaeologist in charge of the deep-water wrecks and research program (left), and Marine Sadania, a maritime archaeologist in charge of scientific and heritage management for the PACA coastline (2ndL), plan the day's exploration in a cabin aboard the (BSAA) Jason during an archaeological mission on the CAMARA 4 wreck off the coast of Ramatuel, in southeastern France, on April 7, 2026. 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)

This photograph shows a view of the "ROV C 4000," a remotely operated vehicle manufactured by the French company LD Travocean and designed for seabed exploration, launched for an exploratory dive to a depth of 2,500 meters from 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 on April 7, 2026. 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)

This photograph shows a view of a ceramic jug, recovered from the wreck of the CAMARAT 4, during its analysis at the DRASSM laboratory in Marseille on April 16, 2026. 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)

This photograph shows a view of a ceramic jug, recovered from the wreck of the CAMARAT 4, during its analysis at the DRASSM laboratory in Marseille on April 16, 2026. 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)

Technical crew members prepare 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 chartered support and assistance vessel (BSAA) Jason during an archaeological mission on the CAMARA 4 wreck 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)

This photograph shows 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 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 on April 7, 2026. 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)