Almost the entire world population of waved albatrosses -- more than 30,000 of them -- nest on Espanola Island. As I walked among the nests, I photographed this pair in the midst of an elaborate courting ritual, which includes much bill-circling and clacking as well as a formalized dance -- actually a waddle. This image may be soundless, but it stimulates our sense of hearing, and asks the viewer to imagine the sound of frantic clacking.