Researchers from St. Petersburg State University have found that the South Kuril fishing zone, known for its rich marine biodiversity, is at risk of pollution from the Fukushima-1 nuclear power plant disaster in Japan. The team used advanced modeling to predict that toxic particles could reach the fishing zone within 13 days and peak on day 25, with detectable levels persisting for 90 days. Despite the water being purified before release, it still contains tritium, an radioactive isotope. The ongoing release of this water into the ocean is expected to take 30-40 years and has already led to the detection of tritium in the Pacific Ocean at levels ten times higher than the permissible limit.