A powerful Māori taniwha sea dragon emerging from a furious storm-wracked Pacific ocean at twilight, massive serpentine body with tribal spiral tattoos glowing with bioluminescent blue, expressive fierce luminous pearl eyes with detailed lightning flash reflections, cel-shaded with bold black outlines, dynamic diagonal composition with crashing wave tendrils, deep ocean navy and electric violet silver palette with lightning glow, powerful primal ancient mood, scattered rain curtain particles and distant lightning bolt silhouettes, Pacific mythology creature concept art with soft bokeh of distant storm clouds