Slideshow: Winners and finalists of the Academy's annual BigPicture competition

Winners and finalists of the Academy's annual BigPicture competition San Francisco's California Academy of Sciences recently announced the winners and finalists of its 7th annual BigPicture: Natural World Photography Competition. Over 6,400 images were submitted by photographers from 65 countries across categories including Terrestrial Wildlife, Winged Life, Landscapes, Waterscapes & Flora, Aquatic Life, Art of Nature, and Human/Nature. Competition entries were selected by a panel of judges incl...