Herrings are kept frozen onboard the boat for the return to the port off Kotka, southern Finland, October 10, 2023. Over the decades, the Baltic Sea enveloped by Northern European industrialised nations has become one of the most heavily polluted marine ecosystems on the planet. Fishermen in Finland now fear that new protection measures might see their trawlers mothballed for good. (Photo by Alessandro RAMPAZZO / AFP)