Plato first told the tale of Atlantis centuries ago, but the legend of the lost city persists. With daring deep-sea dives, exciting archaeological digs, and high-tech mapping projects, researchers are determined to find out what happened to the shining city that once stood. Discover how people are searching for Atlantis, and explore the gear they use and the science behind how it works in special sidebars.

Secret in the sand -- A lasting legend -- Seeking the lost city -- The search is on -- Plato's puzzle -- Diving deeper.