A new study shows that microplastic particles are not only common from the surface to the seafloor, but they're also being eaten by animals and incorporated into marine food webs. The most abundant types of plastic found in the water samples match those commonly used in consumer products. Most plastic waste comes from land, although it may travel far on ocean currents. The microplastic found in Monterey Bay was heavily weathered, suggesting that it had been at sea for months or years.