Modern wild boars still carry traces of domestic pigs brought from the Asian mainland over 2,000 years ago. Nagoya University read that story off 93 jawbones from Shimane's Nishikawazu site—escaped pigs going feral and breeding with native boars. The same thing is happening today from Texas to Brazil.
Declared extinct in 1949, Japan's short-tailed albatross has rebounded to roughly 11,000 birds on the volcanic island of Torishima. We trace how decoys and recorded calls lured the seabird to safer colonies, and how the method echoes Project Puffin in Maine.
Hokkaido culls a record 158,000 deer a year, yet 730,000 remain. Inside the wolf extinction, forest and alpine damage, 5,460 car crashes, and the venison-vs-wolf debate over Japan's missing apex predator.
It has its own asteroid and is a prefectural symbol, yet for over 60 years the Musashi stickleback officially didn't exist. How an ice-age survivor near Tokyo finally became a named species, Pungitius nakamurai.
In the American South, kudzu is a notorious invasive weed. In Japan, its flower yields tectorigenin, a supplement compound. A RIKEN team has now decoded how the flower makes it and brewed it in yeast, with no kudzu required.
A paddy field in central Japan was swallowed by bright yellow flowers. Water primrose, a South American invader, regrows from the tiniest stem fragment. We look at why farmers cannot kill it, how the same plant is wrecking waterways in France, Britain and the US, and why eradication may be impossible.
In 2021 a turtle halted a turtle-painted jet at Narita Airport. Behind the viral story lies a four-year campaign against an invasive American reptile.
Roadkill of the Amami black rabbit, a 'living fossil' found only on two southern Japanese islands, hit a record 185 in 2025. The grim milestone is a side effect of Japan's celebrated invasive-species eradication programs — including a 24-year mongoose campaign declared complete in 2024.
A Reeves's muntjac was sighted in Sakai, Ibaraki Prefecture in late April — the first confirmed sighting in two years and five months. Under Ibaraki's first-of-its-kind ¥2,000 bounty program for citizen-submitted photos, this should have been the first qualifying case. Why is Japan offering cash for sightings of a cute, dog-sized deer? We unpack the agricultural damage, the SFTS tick-borne disease angle, the unsettling lessons from Britain, and what happens if the front line in Ibaraki fails.
In April 2026, all six Tohoku prefectures issued their earliest-ever bear alerts. A fatal attack in Iwate, Aomori's first urban emergency hunting in Hachinohe. Meanwhile, Shirakawa-go deployed 10 'Bear Sonic' units emitting a chalkboard-scratching sound. In Toyama, sightings dropped to zero for a year after installation. Can this Japanese acoustic technology save the day?
Frass discovered on a wild cherry tree at Yoshinoyama, Nara—home to 30,000 sacred cherry trees revered for 1,300 years—has been confirmed as damage from the invasive red-necked longhorn beetle. The first such case in any Japanese national park. A story at the intersection of invasive species, climate change, and cultural heritage.
Researchers at the University of Tsukuba have discovered that pill bugs (Armadillidium vulgare) don't just incorporate the calcium carbonate they eat — they rebuild it from scratch inside their bodies, always producing calcite even when fed aragonite. The unexpected polymorph control reveals a deeper biomineralization mystery and may inspire next-generation biomimetic materials.
On May 31, 2026, 19 Crested Ibises will be released in Hakui City, Ishikawa—the first wild release on Honshu in 56 years. Their Imperial Highnesses Crown Prince Akishino and Princess Kiko will attend, returning to a milestone they witnessed in 2008 on Sado Island. The release is also a symbol of recovery from the 2024 Noto Peninsula earthquake. We compare this revival story with the California Condor and Korean Oriental Stork programs.
When did crabs start walking sideways? A Japan-US-Taiwan team led by Nagasaki University filmed 50 species and mapped them onto a phylogenetic tree, finding that sideways walking evolved just once around 200 million years ago, published in eLife.
Tourist numbers up from 5,000 to 120,000 a year, sea ice at record lows, emperor penguins now Endangered. What ATCM48 in Hiroshima and Japan's Antarctic protection law amendment must confront.
In central Japan's Nagano Prefecture, a dwarf bamboo called Suzutake is undergoing its once-in-120-years mass flowering. The last recorded event was in 1906. Researchers are seizing this rare scientific opportunity and asking citizens for sightings. We unpack the biology behind this mysterious cycle and compare it with India's Mautam famine and the giant panda food crisis in China.
Osaka Metropolitan University researchers discovered that butterflies raised on invasive plants develop altered wing coloration, making them less attractive to potential mates. The study reveals how changes in larval diet affect UV reflection patterns and reproductive success.
WWF Japan reveals shocking data on pet-origin invasive species, while Amami Oshima achieves the world's largest mongoose eradication. A deep dive into 20 years of Japan's invasive species law.
After record-breaking 238 bear attack victims and 13 deaths in FY2025, Japan's Ministry of Environment unveils revised guidelines introducing expanded exclusion zones and a new 'enhanced management area' to separate humans and bears.
Tourists are throwing thousands of coins into the pristine spring-fed ponds of Oshino Hakkai, a UNESCO World Heritage site near Mt. Fuji. The coins poison koi fish with copper and zinc. Here's why this must stop and what Japan is doing about it.