The legends of cities submerged or destroyed by water are very striking and mysterious. Surely behind them there is some natural or human phenomenon that "explains" them, but what is attractive is the imaginary or fantastic mood that has created them. Water is one of the most fertile and significant elements in human creativity, and in particular the sea.
Perhaps many idealize that at some point the mythical Atlantis will emerge from the waters.
Thank you for your enriching and very well illustrated post, @ladyrebecca.