Majestic underwater scene featuring a grand steampunk submarine, reminiscent of the Nautilus from Jules Verne's imagination, gliding gracefully through the deep blue abyss. Its gleaming brass hull adorned with intricate gears and rivets catches the faint rays of sunlight piercing the water. Large, ornate viewing windows reveal a glimpse of the fantastical machinery within, softly glowing with an ethereal light. Schools of colorful fish dart around, weaving between the metal appendages and elegant propellers, while clusters of bioluminescent sea creatures illuminate the surrounding ocean depths, creating a surreal, dreamlike atmosphere.