While vacationing in Santorini you can witness a phenomenon called "Anedosa" sea fog. It's not very common and it's created when the heat from the volcano mixes with the coolness of the sea. If the wind is blowing from the west you will see a thick blanket of fog covering the caldera and the villages located on the cliff's edge. However when it passes the highest point of the cliff it doesn't crawl downhill, but slowly dissipates and leaves most of the island's visitors to enjoy the sunny weather.
I promise I'll stop with panoramas :) Here's a couple of bunnies...