Marine Oil Snow (IMAGE) University of Delaware Caption Andrew Wozniak monitored tanks filled with seawater from the Gulf of Mexico and mixed the seawater with oil, plankton and a chemical dispersant used during the Deepwater Horizon oil spill to conduct a chemical analysis of the particles of marine oil snow that fell to the bottom of the tanks. Credit Andrew Wozniak Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.