Filled with monstrous entities from the deep, both real and fabled, and sailed by marauding pirate ships with bloodthirsty souls looking to plunder and destroy. The great briny blue of the ocean is one of the most terrifying places imaginable. With almost three quarters of the Earth covered by sea,this vast expanse is home to myriad horrors. From hundreds of fathoms down, or lurking just beneath the surface, to brazenly navigating the nautical domain, these deadly threats are just waiting for unsuspecting souls to take to the waters. So come on, take the plunge. Dive on in. The water is fine. What exists within, it is another story.