"Garbage map" is a system that allows you to send out surveys on the amount of dust in rivers throughout the country online. The garbage we thrown away casually moves from the basin to the river, from the upstream to the downstream, from the river to the sea a long distance. And garbage that comes out to the sea drifts to the coast of the country, drifts the sea and drifts to the coast outside of the country. The negative impact that these garbage gives to marine organisms is a global problem. W