Mysterious fish die-offs in Japan spark concerns and speculation

Mass Fish Mortalities in Hokkaido and Nakiri

Japan has recently faced an environmental puzzle with hundreds of tonnes of fish, predominantly sardines and mackerel, washing ashore. In Hokkaido, an estimated 1,200 tonnes formed a silver blanket over a kilometre long near the fishing port of Hakodate. Similarly, Nakiri, located far south, witnessed 30 to 40 tonnes of Japanese scaled sardines, or sappa, stranded. Local fishers, concerned about the potential impact on the marine ecosystem, hurried to remove the fish.