A massive ancient library submerged underwater, hidden for centuries. Sunlight filters through the ocean's surface, illuminating rows of towering, barnacle-covered bookshelves and coral-encrusted stone statues. Fish swim between the aisles, and a diver with a glowing torch discovers a floating, intact scroll glowing faintly with golden runes. Render in hyper-realistic detail, with photorealistic lighting, rich textures, and lifelike underwater ambiance.