illustration and highly detailed render of a immense majestic fractal crystal palace shaped like a shell and a underwater paradise temple ruin, shipwrecks, ruins, seaweed and algae, dirty water, illuminating fractal jellyfish, tiny bubbles, dark, underwater environment, nighttime, underwater, very dark, ultra realistic, intricate details, scary, highly detailed, photorealistic, octane render, raytraced render, volumetric lighting, volumetric volume, light rays, volumetric underwater scene, k, unreal engine, art by artgerm and greg rutkowski and alphonse mucha, hdr, deep underwater lighting