
A dugout canoe (shown) crafted using stone axes modeled off of ancient Japanese artifacts successfully traveled more than 200 kilometers from Taiwan to Japan’s Ryukyu archipelago in 2019.
Archaeological sites on six of these isles — part of a 1,200-kilometer-long chain — indicate that migrations to the islands occurred 35,000 to 30,000 years ago, both from the south via Taiwan and from the north via the Japanese island of Kyushu.
But whether ancient humans navigated there on purpose or drifted there by accident on the Kuroshio ocean current, one of the world's largest and strongest currents, is unclear. The answer to that question could shed light on the proficiency of these Stone Age humans as mariners and their mental capabilities overall.
Now, satellite-tracked buoys that simulated wayward rafts suggest that there's little chance that the seafarers reached the isles by accident.
Researchers analyzed 138 buoys that were released near or passed by Taiwan and the Philippine island Luzon from 1989 to 2017, deployed as part of the Global Drifter Program to map surface ocean currents worldwide. In findings published online December 3 in Scientific Reports, the team found that only four of the buoys came within 20 kilometers of any of the Ryukyu Islands, and these did so only as a result of typhoons and other adverse weather.














Comment: For more on what may have initiated the tsunami, check out Pierre Lescaudron's article The Seven Destructive Earth Passes of Comet Venus.
See also: Erosion of North Sea reveals remnants of 7,000 year old ancient forest believed to be part of Doggerland