8k high quality digital painting, masterpiece, very detailed, ultra realistic, (best quality) very detailed epic masterpiece, unearthly beautiful, thunderstorm on the high seas, a sailing ship in very high waves, dramatic storm clouds, lightning, red and yellow rays of sunlight fall through the clouds and create an eerie light, next to the ship the huge head of a nightmarish sea serpent emerges from the waves, bright yellow eyes, the mouth is wide open, huge teeth and a long tongue, whitecaps on the water, dramatic, spooky, dangerous, action, realistic, rich in detail