Watch: Camera dipped into Japanese drain stuns viewers

A viral video by UK travel blogger Alicia Cooper reveals the stunning clarity of Japan's gutters, showcasing colorful koi fish swimming in a drainage canal in Shimabara. These canals, fed by natural springs and populated with koi since the 1970s to attract tourists, have impressed viewers with their cleanliness and vibrant aquatic life.

Watch: Camera dipped into Japanese drain stuns viewers
A viral video by UK travel blogger Alicia Cooper reveals the stunning clarity of Japan's gutters, showcasing colorful koi fish swimming in a drainage canal in Shimabara. These canals, fed by natural springs and populated with koi since the 1970s to attract tourists, have impressed viewers with their cleanliness and vibrant aquatic life.