drowning earth

Rain fell, covering the earth in a water so deep that it made the world and it's poor inhabitants drown. The earth now consisted of sea creatures that were basically flying because of their true height. The only humans that survived were the scientists who found themselves at the bottom of a near-endless ocean in their tiny submersible. It was truly a miserable time for the scientists. They mourned the loss of all of humanity and continued with their lives, peeking in and out of the water to regain sustenance. They all knew that this was the true end.