When we emerged from the Night Depth, the cause of the earlier lurch was revealed to be one of the enormous leviathans that inhabited the lower known reaches of the Unending Depths. I could see the thing’s flailing lightpods, used to attract prey in the cold, black beneath, through the porthole. The sub groaned as the monster squeezed it with giant, muscular tentacles.
The room was plunged into blackness. The sub rocked again as the creature pushed off of the sub and vanished again. My relief was short-lived. The light didn’t return and I felt the sub being to sink.