Enjoy this fascinating tour of the National Museum of Natural History's Sant Ocean Hall with Curator Dr. Nancy Knowlton. The ocean is a global system essential to all life, including yours! By visiting the ocean hall, you can explore the ocean from the sunlit surface to the darkest depths, from prehistory to today, and from the smallest microorganisms to the biggest animals ever known. The ocean is a huge, awesome realm - sometimes mysterious, but always amazing. Come and dive in! Tour also includes a "behind-the-scene" visit to the museum's collections.