Undersea City

When the Krakatoan Dome was built, seaquakes were allowed for; a run of them from no natural cause was not. The Sub-Sea Academy sends Cadet Jim Eden, more at home in the underwater world than anyone, to find out who is behind them. Pohl and Williamson's third Undersea book first appeared from Gnome Press in 1958; the Del Rey cover art is H. R. Van Dongen's.