NASA's Jet Propulsion Labs provides the El Nino/La Nina Watch page, with color images (and accompanying descriptions) of the retreating La Nina.

NOAA's Tropical Atmosphere Ocean Project (TAO) supplies "real-time data from moored ocean buoys for improved detection, understanding, and prediction of El Nino and La Nina." The website provides materials on the Project's field operations and research, collaborations, and moored buoy panels. Users can display times series, time section, latitude/longitude map, and depth-selection data....