Prompt: Against a dark backdrop, a tranquil expanse of azure water unfolds, revealing a mysterious atmosphere in the underwater realm. Above the water's surface, a luminous moon casts its glow on the shimmering ripples, creating a stark contrast with the pitch-black abyss below. In the depths beneath the water, ethereal shadows begin to contort, taking on grotesque, otherworldly visages. With jaws agape and limbs in macabre motion, these terrifying specters hint at the hidden mystical forces within the aquatic domain. Amidst the serene azure waters, these eerie shadows become increasingly ominous. Artfully portraying a chilling atmosphere, the depiction captures the essence of horror.