Underwater Anime Samurai in an Oceanic Cave

An anime style samurai glides through an underwater cave. He wears sleek luminescent lamellar armor adapted for water, with a flowing scarf and a katana at his hip; his hair or helmet plume trails behind him. Bioluminescent corals, soft algae, and jellyfish illuminate the scene with turquoise, blue, and magenta light. The cave walls are rugged with stalactites, and bubbles rise around him as dim currents sweep the scene. Sunlight filters from a distant crevice, casting dramatic beams and caustics that highlight the armor and blade. The composition is dynamic, with bold line art, crisp shading, and vibrant anime aesthetics. A sense of depth and quiet intensity pervades the underwater realm.