Steampunk Submarine Exploring a Bioluminescent Deep-Sea Trench

Midjourney

By Varun Sharma Tested with Midjourney v7 Aug 10, 2026

A Midjourney v7 prompt for a 16:9 steampunk concept scene: a brass and copper riveted submarine descending into a bioluminescent deep-sea trench, glowing jellyfish and anglerfish illuminating the darkness, mechanical claw arm extended, steam vents releasing bubbles.

Last tested: August 2026 with Midjourney v7

Part of the Midjourney prompt library · see more vintage prompts .

Remix in builder

Brass and copper steampunk submarine descending into a bioluminescent deep-sea trench — Steampunk Submarine Exploring a Bioluminescent Deep-Sea Trench — Midjourney v7, Aspect ratio 16:9

Commercial use included

Prompt

A brass and copper steampunk submarine with riveted plating and a large domed porthole, descending into a bioluminescent deep-sea trench, glowing jellyfish and anglerfish illuminating the darkness around the hull, steam vents releasing bubbles from the submarine's pipes, a mechanical claw arm extended from the bow examining a glowing coral formation, the trench walls visible in the background with faint purple bioluminescence, no text, no letters --ar 16:9 --stylize 250

Settings

Model: Midjourney v7
Aspect ratio: 16:9
Stylize: 250

How to use this prompt

"Riveted plating" is the detail that separates steampunk from generic sci-fi — without rivets the submarine reads as a modern vessel. "Domed porthole" rather than "window" because the dome shape is a period-specific engineering detail. Bioluminescence serves a dual purpose: light source in a dark scene and colour contrast — cool blue-green glow against the warm brass hull. Without that contrast the submarine disappears into the dark. "Steam vents releasing bubbles" is the animation cue that tells you this is steam-powered, not electric. The mechanical claw arm gives the scene a purpose — examination, not just travel.

Variations to try

Replace the submarine with a brass diving bell lowered on a chain
Swap the trench for a sunken Victorian city with glowing windows

vintage cinematic concept art wall art

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Vintage Wall Art Prompts Cinematic Wall Art Prompts Cinematic Midjourney Prompts Vintage Midjourney Prompts

What to do next

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Open this prompt in the Midjourney builder, pre-filled, and change one layer at a time.

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For developers — copy this prompt as JSON

{
  "title": "Steampunk Submarine Exploring a Bioluminescent Deep-Sea Trench",
  "prompt": "A brass and copper steampunk submarine with riveted plating and a large domed porthole, descending into a bioluminescent deep-sea trench, glowing jellyfish and anglerfish illuminating the darkness around the hull, steam vents releasing bubbles from the submarine's pipes, a mechanical claw arm extended from the bow examining a glowing coral formation, the trench walls visible in the background with faint purple bioluminescence, no text, no letters --ar 16:9 --stylize 250",
  "model": "Midjourney",
  "model_version": "v7",
  "settings": {
    "aspect_ratio": "16:9",
    "stylize": 250
  },
  "style_tags": [
    "vintage",
    "cinematic"
  ],
  "use_case_tags": [
    "concept-art",
    "wall-art"
  ],
  "source_url": "https://promptkoi.com/prompts/midjourney/steampunk-deep-sea-submarine/"
}

The whole library is available as an open JSON dataset · developer docs.