The island of Yonaguni (near Okinawa , Japan ) has long been a favorite diving spot for swimmers try to get a glance of the numerous hammerhead sharks that swim there.
In 1995 underwater explorer Kihachirou Aratake found a very large, strange structure under the water. Lying about 60 feet deep, the structure appeared to be man-made. Large steps could be seen, blocks of rock cut at right angles and smoothed. Could this be the lost city of Mu or Atlantis? The discovery would send shock waves through the archaeological world.