An expansive underwater scene featuring a steampunk-inspired submarine reminiscent of the Nautilus from Jules Verne's imagination, with intricate brass gears and portholes, adorned with ornate copper pipes and glowing lanterns, casting ethereal beams of light into the surrounding azure depths, schools of colorful fish darting around, and a coral-encrusted shipwreck resting serenely in the background, soft rays of sunlight filtering down from the surface, creating a mesmerizing play of light and shadow on the seabed.