The Aegean and Libyan Seas in the eastern Mediterranean are split by the island of Crete, which is seen in prominence in this Envisat image.
The image is a collation of three separate passes by the European Space Agency’s Envisat satellite on 11 December 2010, 10 January and 11 March 2011. Each pass was assigned a separate colour – red, green and then blue – and the changes in colour reveal changes in the surface between the three passes.
At the top of the image is the southern portion of the Cyclades island group, including the islands of Milos, Ios, Anafi and Santorini.
Source: European Space Agency