Underwater Exploration & Sea Creatures — LEGO Block Build Plans Generator 
  Pick biome, depth, terrain, structures, creatures, vehicles, and lighting—then generate clean, copy-ready real-build plans.
  
  
    Real-Build Mode:  Only real LEGO/BrickLink parts, legal techniques, stability first. Plans include a BrickLink-ready BOM with smart substitutions and a 0–5 Buildability Score.
  
  
  
    A prompt is the set of instructions you give the AI to produce a visual mockup and build plan. Use the menus to structure it, click Generate, then copy any concept level or “Copy All.”
  
  
  Tip: Some menus allow multiple selections. On desktop use Ctrl/Cmd-click; on mobile, tap to add/tap again to remove.   Return Home 
  
  
    Project Type 
    
      Underwater diorama (display) 
      Submersible scene (play) 
      Aquarium-style showcase 
      Shipwreck exploration 
      Coral reef ecosystem 
      Custom (write-in) 
     
    Scale 
    
      Minifig scale 
      Micro scale 
      UCS showcase scale 
     
    Baseplate / Footprint 
    
      32×32 
      48×48 
      16×32 
      Modular: 2× (32×32) 
      Custom (write-in) 
     
    Piece Count Target 
    
      300–600 (small) 
      700–1200 (medium) 
      1300–2200 (large) 
      2300+ (UCS) 
     
    Underwater Biome 
    
      Tropical coral reef 
      Kelp forest 
      Open ocean (pelagic) 
      Seagrass meadow 
      Deep sea (aphotic) 
      Arctic shelf (ice) 
     
    Depth Zone 
    
      Shallow (0–20 m) 
      Mesophotic (20–150 m) 
      Deep (150–1000 m) 
      Abyssal (1000+ m) 
     
    Terrain Layers 
    
      Sandy bed 
      Rock outcrops 
      Coral formations 
      Seagrass/kelp 
      Thermal vent field 
      Wreck debris field 
     
    Structures / Features 
    
      Shipwreck hull section 
      Anchor & chain 
      Research habitat 
      Observation bubble 
      Cave / archway 
      Treasure chest 
     
    Vehicles / Animals 
    
      ROV (remotely operated) 
      Manned submersible 
      Mini sub scooter 
      Sharks / rays 
      Sea turtles 
      Schooling fish 
      Octopus / squid 
      Crabs / lobsters 
      Dolphins / whales (micro) 
     
    Minifigures & Roles 
    
      Marine biologist 
      ROV pilot 
      Dive team 
      Photographer 
      Conservation ranger 
      None (pure display) 
     
    Color Palette 
    
      Coral brights (teal/coral/lime) 
      Natural earths (dark tan/sand green) 
      Deep sea (dark blue/black highlights) 
      Ice shelf (white/transparent light blue) 
     
    Structural Techniques 
    
      Studs-up (orthodox) 
      SNOT rockwork (brackets/headlights) 
      Micro-tiling coral textures 
      Technic bracing hidden 
      Transparent rod supports 
     
    Play Features 
    
      Removable terrain modules 
      Poseable animals 
      Hinged wreck access 
      Light-through windows 
      Treasures to discover 
     
    Special Elements 
    
      Transparent 1×1 cones/tiles (bubbles) 
      Plant pieces (kelp/corals) 
      Rounded slopes & wedge plates 
      Glow-in-the-dark accents 
     
    Lighting Points 
    
      Top-down sun shafts 
      Side-lit (murky) 
      Spotlit (ROV lights) 
      Bioluminescent accents 
     
    Instruction Style 
    
      Photo-based steps 
      CAD-style instructions 
      Hybrid (photo + CAD) 
     
    Build Purpose 
    
      Display model 
      Play set 
      Educational exhibit 
     
    Difficulty 
    
      Beginner 
      Intermediate 
      Advanced AFOL 
     
    Preview & Proof Option 
    
      AI Mockup Preview 
      Parts Lay-Flat Proof 
      Photo-Verified Steps 
     
    Diorama Pack 
    
      Off 
      On (Simple) 
      On (Advanced) 
     
    Concept Level 
    
      (none — fill all) 
      Basic 
      Intermediate 
      Advanced 
      Crazy Wild 
     
    Custom Notes (write-in) 
     
  
  
  
  
  
    Generate 
    Copy All 
    Reset 
  
  
  
  
 
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