March 1st, 1999 chlorophyll-a image of the Central Black Sea. The land to the top left is the eastern portion of Crimea, Ukraine, to the right is Russia. High chlorophyll-a concentrations are particularly noticeable in the Sea of Azov (top). The land to the bottom of the image is northern Turkey.

Image provided by the Deutsches Zentrum für Luft- und Raumfahrt, DLR (German Aerospace Centre).