A deep dark ocean floor in the mysterious abyss of the sea, a single jellyfish glowing with soft blue bioluminescent light, gently floating with a weightless drifting motion in the silent deep ocean, mystical deep-sea world, thin blue light rays softly shining down through the dark water from above, faintly illuminating the surroundings, calm and tranquil atmosphere, cinematic glowing light from the jellyfish subtly lighting the surrounding water, volumetric underwater fog and soft light diffusion, ultra-realistic underwater lighting, deep blue and black color palette dominating the entire scene, vast dark ocean surrounding the floating jellyfish, atmospheric, ethereal, cinematic composition, photorealistic, extremely detailed, 8k