Cleaning up Tokyo’s polluted beaches

This picture taken on July 22, 2018 shows people visiting the Kasai seaside park in Tokyo Bay. - On a blazing hot Tokyo summer day, children squeal with delight as they splash about on a sandy beach, with the skyline of the worlds biggest city shimmering behind them. The scene may seem unremarkable but it was unthinkable until recently when local activists decided to clean up the polluted water at city beaches, hoping to leave a legacy from the Tokyo 2020 Olympic Games. (Photo by Kazuhiro NOGI / AFP) / TO GO WITH AFP STORY JAPAN-ENVIRONMENT-CONSERVATION-WATER POLLUTION-SWIM-OLY-2020,FEATURE BY KYOKO HASEGAWA

Tokyo: On a blazing hot Tokyo summer day, children squeal with delight as they splash about on a sandy beach, with the skyline of the world’s biggest city shimmering behind them.

The scene may seem unremarkable but it was unthinkable until recently when local activists decided to clean up the polluted water at city beaches, hoping to leave a legacy from the Tokyo 2020 Olympic Games.