In spring 2026 a meter-tall mat of watercress smothered a suburban river in Matsuyama. Japan calls it a priority-control invasive species, yet farms ship 362 tons a year. How New Zealand, Australia and the US see it.
Fish have no eyelids, yet pufferfish close their eyes. Shimonoseki's Kaikyokan aquarium dissected 51 species and traced the eye-closing muscle to the one that deflates a puffed-up puffer.
Warming seas pushed a pufferfish north across the Tsugaru Strait, and the hybrids do not fit Japan's 1983 table of edible species and parts. How the rulebook caught up, and why the Mediterranean has the same gap.
Murakami's salmon run fell from 55,000 fish to 1,400 in a decade. Now the town is spending about $32,000 to attempt what Norway and Chile have not: closing the life cycle of chum salmon entirely on land.
A paint maker in Imabari spent five years building a bear deterrent launcher called Kintaro. Its president fired it at his own body for a year and a half, and zoos refused to let him test it on a real bear.
Desalination makes about 35 trillion liters of fresh water a year and discards roughly 50 trillion liters of brine. A Tokyo lab drips it onto molten tin and recovers magnesium oxide, 280 times concentrated.
A kawakawa hybrid made bluefin tuna sperm at eight months, and rainbow trout now spawn Chinook salmon yearly. Inside Japan's 20-year surrogate broodstock effort and Kindai's 32-year tuna project.
Kobe University isolated seven bacterial strains from PFAS-polluted river sediment in Osaka. Three cut PFOS by up to 17.8%; one removed up to 97% of PFHxS in real landfill leachate. Degradation or adsorption? Unsettled.
That blank, open-mouthed face your cat makes after a sniff may finally have an explanation: 13 branched-chain fatty acids in urine, blended to a ratio unique to each cat and stockpiled in the kidney.
Pacific fishing nations agreed on August 18, 2026 to raise the quota for bluefin tuna over 30 kilograms by 25 percent, to 14,836 tons in the western Pacific, and to cut the quota for juveniles by 6 percent.
A shrine in Iwakuni held a memorial for 281 white snakes that died in one year, the most since records begin in 2009. Only 804 remain in the society's care, and this sacred albino population now breeds as a closed group.