Japan’s Hiroshima produces about 60% of its farmed oysters, but up to 90% have died amid unusually warm seas
Oyster farmers across Hiroshima Prefecture are pulling up their rafts this season to find that most of what they cultivated has not survived. In several coastal districts, mortality rates have reached as high as 90%, far above the usual seasonal loss of 30% to 50%. Producers in the city of Higashihiroshima have reported losses at…