Remote Sensing

http://seawifs.gsfc.nasa.gov/SEAWIFS/IMAGES/IMAGES.html

http://visibleearth.nasa.gov/cgi-bin/results?st=1&page=36&th=905&query=seawifs

Fluorescence readings of phytoplankton blooms are now available from the Moderate
Resolution Imaging Spectroradiometer (MODIS), launched in 1999. The data can be used to assess the health of the plankton.
http://earthobservatory.nasa.gov/Study/glowingalgae/