The French Navy has discovered a 16th-century merchant shipwreck off the coast of Ramatuelle, at a depth of 2,567 meters—deeper than any previously recorded in French waters. The wreck, named Camarat 4 after the nearby cape, is about 30 meters long and 7 meters wide. It was found during a sonar sweep on March 4, 2025, by a team from CEPHISMER, the French Navy's expert center for human diving and underwater intervention. The team was conducting a military mission to monitor the deep sea when they stumbled upon the wreck. Initial analysis suggests the ship was built in Liguria, a region in northern Italy. To explore the wreck, a teleoperated robot named Arthur was deployed to depths where the pressure would be too great for any human to survive. The robot captured 66,974 photographs in three hours, enabling a 3D reconstruction of the wreck through a technique called photogrammetry. A second mission, named CALLIOPE 26.1, took place in early April 2026 from the support vessel Jason, under the scientific direction of archaeologist Marine Sadania from the DRASSM. The images revealed six cannons arranged as they were on the first day of the shipwreck, a massive anchor still attached to its chain, two cauldrons, and a hundred yellow plates stacked with almost unsettling regularity. More than 200 polychrome faience jugs were also visible, some still on the sediment surface, others possibly buried beneath it. One of the jugs bore an unprecedented motif, suggesting new insights into Mediterranean trade exchanges during that era. Despite the richness of the site, the French Navy and the DRASSM decided to retrieve only four objects: three jugs and a plate. Two of the jugs will be used to test different conservation methods, while the third is intended for archaeometric analysis. The rest of the wreck remains undisturbed in accordance with UNESCO guidelines. An aluminum can was found near the anchor, a small but significant reminder of human activity at such extreme depths. The Toulon National Navy Museum will open an exhibition titled Plongée(s) dans l'inconnu starting November 18, 2026, where the public can view the images captured by the robot and the four retrieved objects. However, the wreck itself remains inaccessible to the general public, with scientific mediation being the only way to engage with the site. This approach ensures the preservation of the wreck while allowing researchers and the public to learn from its historical significance.