A cinematic image of a sinister merman with a maniacal grin, featuring piercing yellow eyes and a humanoid face, exuding an aura of mystery. His skin is a pale, human-like hue, contrasting with the melancholic atmosphere. The scene is illuminated by dynamic lighting that highlights the eerie features amid the shadowy depths of a dark underwater background, where the faint silhouettes of ancient shipwrecks add to the scene's haunting allure.