dark dark blue ocean background, deep underwater, very terrifying demonic giant octopus with snarling wolf heads at the end of each tentacle, splattered with blood, full body portrait showing entire scary monster, neo-expressionistic, maximalist, horror monster masterpiece, trending on DeviantArt, 4K resolution, dark cinematic, hyperrealism, octane render, volumetric lighting, ultra-detailed, chiaroscuro, in the style of Giger and Ralph Steadman and Da Vinci,