The Terror of Shadows

In the depths of the genesis 2 oceans, there lurks a creature so strong and quick, that no one has ever seen it and lived. One person in the whole ark has seen it, but sadly they were on the ship when rockwell was killing everyone, but one of their notes described it. It said "I saw the most terrifing thing, it had entirely black skin, huge teeth, and it dwelled in the shadows. I watched in horror as pure shadow swallowed tusos and mosas whole! Right as it swallowed a tuso, i think it spotted me, because it started darting towards me! The only reason i lived is because there happened to be a mosa that distracted it. I wish i could describe it more, but it just looked like pure shadow."

-Scar (This was my first myth so i hope you enjoyed😁)