Q1: What measures are necessary when methylmercury pollution occurs?

A1: Identification of the pollution source to prevent its spreading is necessary. If a river or sea is polluted, prohibition of fishing is also necessary.

Commentary:
It is important to identify the source of the pollution and to prevent the expansion of the contamination.
If wastewater from a factory is involved, cessation of drainage is necessary.
It is also important to prohibit fishing in the polluted area to avoid human exposure to methylmercury.
The restoration of the environment is also necessary after removal of the pollution source.