El Niño years can have a big impact on the littlest plants in the ocean. During El Niño, warm waters from the western Pacific migrate eastward toward South America, blocking the supply of nutrients from the lower depths of the ocean to the sea surface. Discover how we’re using satellite data to study the relationship between this weather phenomenon and the ocean’s food source: http://go.nasa.gov/1TwwHSx | NASA - National Aeronautics and Space Administration