
Clams And Sand To Help Improve Water Quality For Olympic Marathon Swim0 (0)
Clams And Sand To Help Improve Water Quality For Olympic Marathon Swim Courtesy of Takuya Isayama and Yahoo! News, Odaiba Marine Park, Tokyo Bay, Japan. To improve the water quality of Tokyo Bay for the 2020 Tokyo Olympic Games 10 km marathon swim, the organizers have begun to dump 11,000 cubic meters of sand infused with clams and other shellfish in the