Nurdles are small plastic pellets about the size of a lentil. Countless billions are used each year to make nearly all our plastic products but many end up washing up on our shores due to spills and mishandling during shipping!
Scientists are becoming increasingly concerned about the effect of nurdles on our delicate marine ecosystem. Nurdles attract and concentrate background pollutants like DDT and PCBs to highly toxic levels, and like other plastics nurdles are mistaken for prey by many marine animals and seabirds and enter the food chain.
Source: The Great Nurdle Hunt.