*cough cough*
A stirring can be felt in the mid-Atlantic ocean. A particular spot on the ocean floor..
Where there was previously only a decaying hulk of a long-destroyed research station.
Vibrations. Subsonic, too low to hear, but easy to feel.
With a rumble that stirs up sediment for miles in all directions.. a single pod rises from the muck.
A few sputtering lights can be seen in the portholes, slowly turning on in an uneven sequence.
Slowly.
Surely.