18,000 Israelis participated in the massive clean-up of Israeli beaches (reported here previously). Together, they collected 62 tons of trash along the Israeli shores of the Mediterranean, Red Sea and Sea of Galilee. Their world record attempt is waiting to be ratified by Guinness World Records.
https://www.israel21c.org/18000-people-pick-up-62-tons-of-trash-on-israeli-shores/