The book by popular American science fiction writers F. Paul and J. Williamson tells about exciting adventures in the underwater country of Marinia. The existence of an entire state on the ocean floor became possible thanks to the invention of a special material by the famous scientist Stuart Eden that could withstand the pressure of huge layers of water. In the novel “Underwater City”, cadets of the Submarine Academy Jim Eden (Stuart Eden’s nephew), Bob Eskow and their friend Harley have to take assume responsibility for the fate of an entire city - Krakatoa Dome, which is about to die from a monstrous earthquake...