Set Details
- Set Number
- 10404
- Name
- Ocean's Bottom
- Theme
- Classic
- Year
- 2018
- Pieces
- 579
- Complexity
- Substantial
- Build Time
- 2-4 hours
- Ages
- 10+
- Type
- Play-focused
About LEGO Ocean's Bottom
LEGO Ocean's Bottom (set #10404) is a large, detailed build with 579 pieces from the Classic theme, released in 2018. The Classic line features open-ended brick boxes for freeform creative building. At 579 pieces, this is a substantial-level build with an estimated build time of 2-4 hours, suitable for ages 10+.
Set Highlights
- 579 pieces at substantial complexity — a 2-4 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 10+ builders.
Who Is This Set For?
Gift for Ages 10+
The substantial difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 10+ age range.
Weekend Build Project
579 pieces with an estimated 2-4 hours fits comfortably into a focused afternoon or weekend session.
Expanding a Classic Collection
A solid addition for collectors building out their Classic shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
A five-minute sort by color or piece type before starting saves time hunting for specific bricks mid-step.
Follow the numbered steps in sequence — structural elements early in the build support everything that comes after.
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 Ocean's Bottom (#10404) 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.
Ocean's Bottom FAQ
Related Reading
More Classic Sets
See all Classic →
Also Released in 2018
All 2018 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
Need Instructions for Ocean's Bottom?
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