Into Blue Midnight

The expedition was going so well, but at 3,000 feet below the surface, when the ocean turns from blue to black, everything goes wrong. Something cracks. Water starts to fill at your feet. The crane at the surface jams. The radio line goes quiet. And now the two of you are alone, only a few layers of steel and a quartz window to keep you from death.  You have one hour of oxygen left. Conserve breat…