Chinese vessels at Whitsun Reef, South China Sea

In this March 7, 2021, handout photo provided by the Philippine Coast Guard/National Task Force-West Philippine Sea, some of the 220 Chinese vessels are seen moored at Whitsun Reef, South China Sea. Swarms of Chinese vessels have dumped human waste and sewage for years in a disputed South China Sea territory, causing algae blooms that have damaged coral reefs and threatened fish in an unfolding catastrophe, a U.S.-based expert said Monday July 12, 2021. (Philippine Coast Guard/National Task Force-West Philippine Sea via AP)