Ultimate, highly elaborate character illustration, underwater scene, large male (Cthulhu:1.8), Aquatic beast below, scaled body, tentacles, sinister gaze, murky depths, foreboding atmosphere, deep sea environment, HPL influence, digital medium, exaggerated forms, rich textures, ominous hues, otherworldly perspective, 8k resolution by: Terry Redlin, Jimmy Lawlor
(Cthulhu:1.8), aquatic beast below  