This image from the Landsat 8 satellite captures a phytoplankton bloom in the Sea of Marmara on May 17, 2015. The sea is situated between the Black Sea and the Aegean Sea and surrounded on all sides by Turkey.
The swirling yellow, green and purple shapes on the water likely represent different species. The lines depict both the location of the concentrations of plankton as well as the eddies and currents within this small sea.
Read the full story here.