Within the forests of jap Taiwan, a staff of scientists got down to reply a query that has puzzled archaeologists for many years. With out entry to trendy instruments or navigational aids, how did Paleolithic people attain the distant islands of southern Japan? Their investigation led to an bold, real-world experiment that bridged hundreds of years of human historical past.
Led by Professor Yousuke Kaifu of the College of Tokyo, researchers from Japan and Taiwan undertook a voyage to recreate one of many earliest recognized sea crossings in human historical past. The journey, from jap Taiwan to Japan’s Yonaguni Island, spanned roughly 225 kilometers throughout open ocean. To make sure authenticity, the staff used a 7.5-meter dugout canoe made with replicas of 30,000-year-old stone instruments.
Historical Expertise Meets Trendy Science
Development of the canoe started in 2019, utilizing a single Japanese cedar log felled with a reconstructed Paleolithic axe. The log was hollowed out by hand in a public exhibition at Tokyo’s Nationwide Museum of Nature and Science. Kunihiro Amemiya, a craftsman and participant within the undertaking, wore handmade animal disguise clothes and demonstrated conventional woodworking methods all through the method.
Actress Hikari Mitsushima, initially from Okinawa Prefecture, participated within the carving demonstration. She remarked on the symbolic nature of the hassle, saying, “Because the trunk is hollowed out little by little, it’s just like the reminiscences of these making it are being left behind.” The finished canoe was named Sugime, and was constructed to match the specs required to outlive an open sea crossing.


Throughout the Sea on Intuition Alone
In 2025, the analysis staff launched Sugime into the East China Sea, aiming to copy the presumed migration route of early people. Paddling for over 45 hours with out assistance from maps or navigation units, they relied solely on the solar, stars, ocean swells, and intuition to information their approach. The canoe departed from jap Taiwan and efficiently reached Yonaguni Island in Japan’s Ryukyu Archipelago.
All through the crossing, visibility of land was minimal. The researchers concluded that early people seemingly had important seafaring expertise. “We now know that these canoes are quick and sturdy sufficient to make the crossing,” mentioned Kaifu. “However that’s solely half the story. These female and male pioneers will need to have all been skilled paddlers with efficient methods and a powerful will to discover the unknown.”


Simulations Unlock Historical Methods
To assist the bodily experiment, the staff performed lots of of digital simulations. These fashions included historic ocean circumstances and examined numerous departure factors, seasons, and paddling methods. The simulations demonstrated that ranging from northern Taiwan elevated the chance of a profitable crossing.
A key discovering was the significance of angling barely southeast relatively than heading straight towards the vacation spot. This adjustment helped counter the Kuroshio Present, one of many world’s strongest oceanic flows. “I assumed when you entered it, you may solely drift aimlessly,” mentioned Dr. Yu-Lin Ok. Chang, oceanographer at JAMSTEC. “However the outcomes of our simulations went far past what I had imagined.”
Rethinking Early Human Exploration
The experiments assist the speculation that early trendy people may have migrated to the Japanese archipelago utilizing canoes. Archaeological proof alone, similar to artifacts and skeletal stays, has confirmed inadequate as a result of ocean’s tendency to erase bodily traces. The analysis staff turned to experimental archaeology to fill in these gaps.
Kaifu emphasised the parallels between Paleolithic migration and later seafaring cultures. “For instance, the traditional Polynesian individuals had no maps, however they may journey nearly all the Pacific,” he mentioned. “There are a selection of indicators on the ocean to know the fitting route, similar to seen land lots, heavenly our bodies, swells and winds. We discovered components of such methods ourselves alongside the best way.”