The intense blue and green colors of the ocean water in this photo-like image, captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite on July 15, 2007, are made by millions of surface-dwelling ocean plants. Called phytoplankton, the plants are the base of the marine food chain. The brilliant color shown here may only be a part of the full bloom. Stocked with nutrients that have built up during the winter and bathed in the long, sunlit days of late spring and early summer, the cool waters of the North Atlantic come alive every year with a vivid display of color that can stretch over thousands of kilometers.
You can download a 250-meter-resolution KMZ file of the North Atlantic bloom suitable for use with Google Earth.
NASA image created by Jesse Allen, using data obtained from the MODIS data archives.