Wide view of an underwater scene featuring a Victorian-inspired steampunk submarine named Nereus, gliding gracefully through the depths. Copper and brass plating gleam faintly in the dim light, while intricate gears and pipes adorn the hull. Giant, ornately designed portholes reveal glimpses of vintage machinery inside. Mechanical tentacles extend from the base, interacting with ethereal schools of bioluminescent fish. The dark blue ocean around teems with mysterious sea creatures, and ancient ruins loom in the background, shrouded in the deep sea mist.