Marine archaeology, in itself has a very broad spectrum of aspects to be addressed to give a comprehensive treatment to the subject. Right from the submerged to the now exposed and also the articles and evidences available in museums and other locations on land. In this work we have taken up the submerged underwater sites as a focus area and attempted to cover multiple dimensions of the study. Even the other aspects of the submerged part, like shipwrecks, stone anchors and others have been kept out of the study to keep the focus. Thus, we have used the term Underwater Archaeology: A Lost Enigma as the title of our work that brings more clarity to the research undertaken and the corresponding manuscript at the end of the study.