Around Minamata bay in Kumamoto.
Around Agano river in Niigata

Minamata disease makes patient’s limb numbness, unable to articulate properly, to develop a hearing loss and blurred vision.

Minamata disease is a neurological disease caused by organic mercury poisoning.
People who living by Minamata bay and Agano river eat contaminated fishes.

Organic mercury flowed to Minamata bay from a factory built near the bay.
Fishes that lived in Minamata bay grew up in contaminated water.
Organic mercury was accumulated in fish body.