The Choshi River: Seeing the Unseeable

Explore a world beneath crystalline waters

A river in western Japan contains water so clear canoes that navigate it look like they're floating on air. Located near the Kumano Kodo Pilgrimage Route world heritage site, the Choshi River offers a unique opportunity to observe natural phenomenon and aquatic creatures with stupefying clarity, including the mirage-like boundary created when freshwater meets seawater, and the unknown life of the endangered Japanese eel. A new species has also been discovered in a "subterranean river" that is, in fact, essential to the Choshi's singular transparency. Explore the natural wonders of an untouched, pristine river.