Anime Kelpie in an Underwater Cave

An anime-style digital painting of a kelpie, a graceful water horse, gliding through an underwater cave. The kelpie has a sleek, iridescent body with translucent, water-like skin, a mane and tail that flow as ribbons of liquid, and delicate fins along its cheeks and flanks. Its large, expressive eyes convey curiosity and calm. The cave walls are rugged and encrusted with coral, glowing bioluminescent algae, and swaying seaweed. Beams of sunlight filter from above, creating shimmering caustics on rocks and sand. Bubbles rise around the kelpie as small, silver fish dart through the scene. Faint ancient runes etched into the rock glow softly, hinting at forgotten magic. The color palette blends deep blues and teals with electric cyan and magenta highlights. The mood is serene yet mysterious, with a dynamic composition and crisp anime-style linework.