Rio de la Plata satellite image (IMAGE) University of Washington Caption A 2002 satellite view of the Río de la Plata, which forms at the confluence of the Paraná and Uruguay rivers and expels a plume of silt that impacts winter feeding conditions for Magellanic penguins. Credit Jacques Descloitres/MODISRapid Response Team/NASA/GSFC Usage Restrictions No restrictions. License Public Domain 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.