A dark and terrifying cthulhu creature, eldritch cosmic horror

a dark and terrifying cthulhu creature, eldritch cosmic horror, twisted and disturbing tentacles, abyssal depths, otherworldly entity, ancient and primordial, unspeakable abomination, dark and foreboding atmosphere, tendrils of madness, chthonic nightmare, glowing eyes in the depths, visceral and unsettling, (best quality,4k,8k,highres,masterpiece:1.2),ultra-detailed,(realistic,photorealistic,photo-realistic:1.37),dark fantasy,horror,moody lighting,dramatic shadows,unsettling colors