A mysterious hidden world, underwater world, deep sea creature

a mysterious hidden world, underwater world, deep sea creature, bioluminescent creatures, glowing creatures, otherworldly landscape, ethereal atmosphere, dark and moody, dramatic lighting, hyper-realistic, cinematic, award-winning digital art, octopus, jellyfish, anemone, coral reef, sea floor, blue and green color palette, dramatic shadows, moody lighting, photorealistic, highly detailed, intricate details, 8k, best quality