The photo was shot at f/4.5 and 1/80 second at ISO 100. The RAW image was converted and adjusted in Aperture 3.
This photo was taken from the stern of our boat during the evening of our last night in the Galapagos Islands. We were just about to depart from Floreana Island. I had waited for the sun to completely set to avoid burnout and was able to catch this remaining light as cloud cover moved in.