Cinematic 8k wallpaper, huge Cthulhu looming over a stormy sea, centered composition with a towering lighthouse perched on a mossy rock, sharp focus, inducing megalophobia, extremely detailed 4k digital painting with light organic glow, photorealistic and movie quality, dark moody ambiance, lumen reflections dancing on turbulent waters, atmospheric lighting, capturing the massive scale, subsurface scattering, hyperrealism with intricate textures, highly realistic and detailed photo in 64k UHD, resembling DSLR sharpness, achieving an unreal engine 5 look, rendered in octane with 8k resolution.