First Modern Day Marine Fish Declared Extinct The International Union for Conservation of Nature, or the IUCN, officially announced the extinction of the endangered smooth handfish. Related: Polar Bears and Penguins Could be Extinct by 2100 if Ocean Temperatures Continue to Rise at the Current Rate The extinction of the fish marks a depressing milestone: the first modern-day marine fish to be declared extinct.ย Unfortunately, the smooth handfish […] Brains Clay Malott | July 20, 2020 0 Comments