Atlantis has been discovered many times before, at many different locations. Believers will believe what they like to believe. Skeptics will be skeptics irrespective of truth staring them in their faces. There is a balanced article here. Last para is particularly interesting.
It appeasr starnge that our scientists can find flowing water on Mars but not what is beneath the water in our own backyard. Large mutinational companies can find Oil, Gold and so many other minerals under the sea bed but not Atlantis. No wonder amateurs have to take the responsibility of rediscovering it every few years.