Set Details
- Set Number
- 40783
- Name
- Coral Reef Diorama
- Theme
- Promotional
- Year
- 2025
- Pieces
- 260
- Complexity
- Moderate
- Build Time
- 1-2 hours
- Ages
- 8+
- Type
- Collectible
About LEGO Coral Reef Diorama
LEGO Coral Reef Diorama (set #40783) is a detailed build with 260 pieces from the Promotional theme, released in 2025. The Promotional line features exclusive promotional and gift-with-purchase sets. This is a moderate-level build suitable for ages 8+, with an estimated build time of 1-2 hours.
Set Highlights
- 260 pieces at moderate complexity — a 1-2 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Display-focused design — the finished model holds together well on a shelf without support.
Who Is This Set For?
Gift for Ages 8+
The moderate difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 8+ age range.
Weekend Build Project
260 pieces with an estimated 1-2 hours fits comfortably into a focused afternoon or weekend session.
Expanding a Promotional Collection
A solid addition for collectors building out their Promotional shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
Check the piece count on the bag against the parts list before starting — knowing what you have prevents mid-build surprises.
Even in small sets, connection order matters. Follow the steps rather than building sections independently.
Keep the instruction booklet after building — it's the most reliable reference for disassembly, cleaning, or reassembly after storage.
Finding Instructions
Building instructions for LEGO Coral Reef Diorama (#40783) are available as a free PDF on LEGO.com. You can also upload a photo of this set to LegoFinder to identify it and access the instructions directly.
Coral Reef Diorama FAQ
Related Reading
More Promotional Sets
See all Promotional →
Also Released in 2025
All 2025 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
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