(Ultra- realistic, 32k, Masterpiece, High Quality, Detailed Realistic Background, Official Art, Realistic Lighting). Illustrate Siphon Sentries, a formidable alien species adapted to survive in the extreme environments of Europa’s deep ocean. These sentries are large, armored creatures with segmented exoskeletons resembling a mix of crustacean and cephalopod anatomy. Their powerful tentacles are lined with siphon- like tubes that draw in water and expel it with force, allowing them to move with surprising speed through the ocean depths. Their bioluminescent markings pulse rhythmically, communicating with one another through light in the vast darkness. In the background, depict their alien habitat—a deep, abyssal plain beneath Europa's ice. The scene features towering hydrothermal vents and massive, floating, organic- like structures that serve as their sentry outposts. The structures glow faintly, surrounded by currents of thermal energy and glowing deep- sea flora. The icy ceiling of Europa looms above, barely visible through the dark waters. Energy pulses flow between the sentries and their outposts, creating an eerie yet beautiful contrast between organic life and the mysterious architecture. The lighting should evoke a sense of vast isolation, with cinematic dark tones highlighting the luminescent accents of the sentries and their alien world. "