Japan's Crystal-Clear Drains: Koi Fish Swim Where Garbage Should Be!

• Viral videos show exceptionally clean drainage canals in Japan, with koi carp swimming freely.
• These special canals, notably in Shimabara, Nagasaki Prefecture, are fed by fresh spring water from a 1991 volcanic eruption.
• Japan's strict waste management, community cleaning, and regular maintenance keep these open channels pristine.
• Local residents actively clean to ensure fish health, using them as natural indicators of water quality.
• While not all Japanese drains are this clean, these canals exemplify the nation's strong clean culture and environmental respect.

Why It Matters: Japan's unique clean drainage canals, where fish thrive, showcase its exemplary environmental culture.