Places: The English Channel
This image from Landsat 8 shows the western end of the English Channel off the coast of Cornwall. A phytoplankton bloom spreads for dozens of miles, filling the St. Austell Bay.
The only time I was on the Channel was on the ferry from Dover to Calais, on a particularly rough but clear day.
English Channel :: 50°01' N, 4°31' W
Image credits: NASA