The ocean is not as natural as it once was. Where there used to be large predators that we took for sea monsters, now there are tiny fish and jellyfish. But there are a few untouched places left in the ocean, remote oases of life where sharks are the kings of the underwater world. These last wild places can show us what we have lost, but also help us understand how the ocean works and how to preserve it.
To celebrate World Ocean Day, National Geographic Ocean Fellow Enric Sala takes us on a virtual expedition of the biologically-rich waters of Chile, Costa Rica, and Kiribati. Sala is a marine ecologist who dedicates his career to restoring ocean health. A former professor at Scripps Institution of Oceanography, his work includes exploration, research, communication, and policy.
This webcast was recorded at the Smithsonian's National Museum of Natural History on June 9, 2011.