Leviathan, the King of Monsters and Sin of Envy

Out on the open shore, me and a couple buddies went to the ocean to catch some fish and take in the sights of the deep blue. A few hours after leaving the seaside, my friend Aaron mentioned he heard a low rumbling noise underneath our small boat. As I focused in on the background ambience, I began to hear it aswell. Then my other friends picked up on it shortly after. I wish I could explain to you how i got out of this alive, but I'd struggle to find the words. The rumbling got closer, and closer, until finally... A giant creature unlike any we've all witnessed before leaped out of the vast expanse of the sea. It was terrifying. I would describe it in detail, but... I want to keep my sanity. The least I can tell you is that it resembled a rotten whale, miles across.