A lightning bolt is thrown down the gullet of a moon fish electrifying the flat body and sending it soaring to replace the drifting one above. the vacuum commonly associated with space will usurp the lightning from the slippery throne and the new moon will bloat to fullness before deflating, just to be replaced again.
A force from the deep may bubble and roll the waters before quieting and snatching the frightened souls from the sailors to charge the lightning that strikes the moon fish.