Sea farmer works in a shellfish breeding farm off the coast of Bricqueville-sur-Mer, northwestern France, on September 13, 2026. French mussel farms have been hit hard by the heatwaves, and the drought has deprived them of nutrients: French mussel production has fallen by a quarter during the summer of 2026, according to industry experts, who are facing the future with uncertainty. (Photo by Guillaume SALIGOT / AFP via Getty Images)