Sea farmer Gaspar Maine, 21, works during mussels harvest in the EARL Maine père & fils 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)

This photograph shows bouchot mussels on mussels stake 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)

This photograph shows bouchot mussels on mussels stakes in the EARL Maine père & fils 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)

This photograph shows bouchot mussels stored in a net in the EARL Maine père & fils 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)

This photograph shows young mussels growing in the EARL Maine père & fils 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)

This photograph shows partly-under water mussels stakes on the EARL Maine père & fils 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)

This photograph shows a mussel stake on which a lot of mussels are missing in the EARL Maine père & fils 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)

This photograph shows young bouchot mussels on wooden stakes in the EARL Maine père & fils 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)