2002 satellite picture of Phytoplankton bloom in the Black Sea
NASA
2002-05
<a rel="nofollow" class="external free" href="https://visibleearth.nasa.gov/images/59088/phytoplankton-bloom-in-the-black-sea/59090l">https://visibleearth.nasa.gov/images/59088/phytoplankton-bloom-in-the-black-sea/59090l</a>