Dr. Nancy Knowlton is the Sant Chair for Marine Science at the Smithsonian’s National Museum of Natural History and a scientific leader of the Census of Marine Life. She wrote the book, Citizens of the Sea, to celebrate the ten years of the Census. She founded the Center for Marine Biodiversity and Conservation at the Scripps Institution of Oceanography of the University of California, San Diego. Knowlton has devoted her life to studying, celebrating, and striving to protect the multitude of life-forms that call the sea home. She lives with her family in Washington, D.C.