‘Bang’ Dayat is from Depok, West Java. Founder and leader of the Sahabat Ciliwung Foundation, he is committed to tackling marine litter and protecting the sustainability of Ciliwung River. Working together with the local authorities, who support his numerous activities, he organises a strong network of volunteers for river cleanups, installing waste banks in the local areas and educating the riparians about the issues of solid waste and the necessary alternatives to illegal dumping.