**_A great story powerfully told_** > _The great depths of the ocean are entirely unknown to us; soundings cannot reach them. What fanes in those remote depths, what beings live twelve or fifteen miles beneath the surface of the waters, what is the organisation of the animals we can scarcely conjecture?_ - Jules Verne; _Twenty Thousand Leagues Under the Sea_ (1870) Aside from space, there can be no working environment as potentially dangerous, perilously exacting, and psychologically isolating as the ocean floor. Colloquially known as "doing sat", saturation diving is a technique to re...