The overall procedure is consistence and compatible with all levels of training and depth. So divers applied the same set of skills and build upon them. You don’t need to unlearn skills!
Ghostly graveyard of 60 perfectly preserved ancient shipwrecks is found by climatel scientists at the bottom of the Black Sea By Harry Pettit For Mailonline 09:42 19 Sep 2017, updated 18:05 19 Sep 2017
Understanding the importance of underwater archaeology: An abstract The sea level has influenced humans since the beginning. The action associated with the rise of body water (glacial- interglacial climatic cycle) changed the paleography of the continental shelf which means that one-time marine environments now can be populate it by human (even for prehistoric human occupation). […]