The comical photograph of the fat-bellied penguins marching in file across the ice was taken in Antarctica by Tory Kooyman, a research assistant at the Scripps Institution of Oceanography in La Jolla, California. He had accompanied a group of biologists on a trip to the continent to study penguins, and was out on the ice at midday when he saw the birds emerging from the water, their bellies full of fish from weeks of feeding at sea. Hesitating at first because the ice was thin, the penguins finally followed the “I’m in charge” leader toward thicker ice, where Kooyman was waiting with his camera. He used his Nikon N90 camera with an 80-200mm zoom lens set at about 150mm, and exposed at 1/250 second and f/8. The film was Velvia.