A majestic ethereal water dragon with translucent pale blue scales and flowing white mane, swimming gracefully through an ancient underwater palace ruins, delicate bioluminescent coral and jellyfish floating around, long elegant whiskers trailing in gentle currents, expressive wise golden eyes with soft light reflections, cel-shaded with bold black outlines, dramatic upward-looking composition, deep ocean teal and glowing cyan color palette with light rays streaming from above, mystical serene mood, floating golden sand particles, majestic fantasy creature concept art