Phytoplankton off the Coast of Portugal

Phytoplankton off the Coast of Portugal

A large phytoplankton bloom off of the coast of Portugal can be seen in this true-color image taken on April 23, 2002, by the Moderate-resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Terra satellite. The bloom is roughly half the size of Portugal and forms a bluish-green cloud in the water. The red spots in northwest Spain denote what are likely small agricultural fires.

Images & Animations


File Dimensions

  • 540x540
  • JPEG
  • 4000x5200
  • JPEG 2 MB

Note: Often times, due to the size, browsers have a difficult time opening and displaying images. If you experiece an error when clicking on an image link, please try directly downloading the image (using a right click, save as method) to view it locally.


  • Visualization Date:

    May 1, 2002
  • Sensor(s):

    Terra - MODIS
NASA - National Aeronautics and Space Administration