Jule Gilfillan / OPBscience environmentPlastic's New Threat: Indestructible Rafts For Ocean-Crossing Invasive Species By Jule Gilfillan (OPB)Newport, Oregon July 29, 2019 1 p.m.Plastics show up in beach debris all over the world. Scientists are discovering that they present a new kind of threat: they're providing invasive marine species with floating, ocean-crossing "rafts."Tags: Science & Environment, Environment, Flora And Fauna, Local, News, Science, Sustainability, Water