Промпт epic fantasy digital painting of a colossal sea monster, resembling a prehistoric dragon or plesiosaur, swimming in the deep ocean. The creature has a textured, bumpy, stone-like skin with spikes along its back. Its massive mouth is wide open, revealing sharp teeth and glowing with an intense golden light from within. Sunlight filters through the water's surface above, creating dynamic ripples and beams of light. Small fish swim around the monster. In the background, there are dark silhouettes of ancient sunken ruins. The scene is rendered in a painterly style with rich blues, teals, and golds, evoking a sense of mystery and awe. --ar 16:9 --v 6