What do we know about Atlantis?

"First described by Plato, the idea of Atlantis has existed since 360 BC! Learn about the history of the Greek god Poseidon's relationship with the kingdom and the real research that's been done by historians and scientists who are trying to locate Atlantis. Featured in plenty of movies, books, and comics, Atlantis is still relevant in popular culture--but does it really exist? Find out all the facts we do know about it in this . . . book"--Provided by publisher.