Ocean plastics pose an “existential threat” to marine life diversity, with just small doses proving fatal. Damning new research led by experts at Ocean Conservancy has warned that thousands of red-listed threatened species are ingesting dangerous levels of plastics - despite global efforts to clean up rubbish from beaches and waterways. The study, released by the Proceedings of the National Academy of Sciences, aims to quantify exactly which types of plastics pose the greatest risks. This