Ocean floor discovery: the E among rocks and a shipwreck

{
  "input": {
    "prompt": " Underwater photo-real illustration: deep-sea scene lit by ROV floodlights, with silt, rocks, and a partial shipwreck (rusted railing, broken hull). Nestled between rocks sits a clean, medium-sized capital “E” (looks like a plastic or metal letter), incongruously pristine. Include a robotic arm in frame pointing at it with a laser scale (two red dots) to emphasize “medium-sized,” and floating particles in the water for realism."
  }
}