Tuna are one of my favorite creatures on the planet - they're pure predactory power - beautiful in their perfection. I took this picture in the deep water aquarium room at the Monterey Bay Aquarium. It was tough to get a good shot because of the very low light and because the fish move so fast. Having the new Canon EOS 5D Mark III and being able to get good quality at ISO 6400 made all the difference in the world.