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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Want me to also re-output the **card listing** snippet (image + one-line description + “Use This Tool” button) for your homepage, pointing to this generator’s slug?
