A regional environmental officer shows a blue crab (Callinectes sapidus) which will be analyzed, measured and weighed at the laboratory of the Mediterranean Institute of Oceanography (MIO), in Hyeres, southeastern France on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

A regional environmental officer shows a blue crab (Callinectes sapidus) which will be analyzed, measured and weighed at the laboratory of the Mediterranean Institute of Oceanography (MIO), in Hyeres, southeastern France on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

Regional environmental officers shows a male (down) and female blue crab (Callinectes sapidus) which will be analyzed, measured and weighed at the laboratory of the Mediterranean Institute of Oceanography (MIO), in Hyeres, southeastern France on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

A regional environmental officer shows a blue crab (Callinectes sapidus) which will be analyzed, measured and weighed at the laboratory of the Mediterranean Institute of Oceanography (MIO), in Hyeres, southeastern France on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

This photograph shows a blue crab (Callinectes sapidus)in a salt pond (Salins) near the Mediterranean see in Hyeres, southeastern France, on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

This photograph shows a blue crab (Callinectes sapidus)in a salt pond (Salins) near the Mediterranean see in Hyeres, southeastern France, on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

This photograph shows a blue crab (Callinectes sapidus)in a salt pond (Salins) near the Mediterranean see in Hyeres, southeastern France, on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)

This photograph shows a blue crab (Callinectes sapidus) in a bin near the Mediterranean sea in Hyeres, southeastern France on May 28, 2026. (Photo by MIGUEL MEDINA / AFP via Getty Images)