LiveScience: Ghostly and blue-green, a phytoplankton bloom meanders across the North Sea in new satellite imagery. The satellite image was taken by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite. Terra is part of a team; along with another NASA satellite, Aqua, it images the entire surface of the Earth every day or two. The picture of the phytoplankton bloom was taken on May 30. Phytoplankton are microscopic plantlike organisms that drift in the oceans. Blooms occur when...