https://ca.yahoo.com/news/chinese-ships-dumped-much-poop-060416510.html
China is denying it and the Philippines is investigating.
https://www.cnn.com/2021/07/14/asia/philippines-south-china-sea-sewage-intl-hnk/index.html
https://www.globaltimes.cn/page/202107/1228779.shtml