More microplastics in Earth's deepest point than sea surface: Study
Chinese researchers have discovered human-made microplastics at Pacific's Mariana Trench near the Challenger Deep, which lies 11 km below sea level and is the deepest point on Earth.  They found 2.06 to 13.51 microplastic pieces per litre, several times higher than that in open ocean subsurface water. Earlier studies have found microplastics in stomachs of animals from the deep-sea region.