Introduction
This manual provides essential information for the assembly, operation, and maintenance of your LEGO DREAMZzz Nightmare Shark Submarine (71500) building toy. Designed for ages 9 and up, this set offers two distinct building modes: a stealth shark submarine or a mighty hammerhead shark battleship. It includes 1,413 pieces and several minifigures to enhance imaginative play.

The fully assembled LEGO DREAMZzz Nightmare Shark Submarine (71500) set.
Safety Information
- Small Parts Warning: This set contains small parts which may pose a choking hazard for children under 3 years of age. Adult supervision is recommended during assembly and play for younger children.
- Age Recommendation: This building toy is recommended for ages 9 and up.
- Proper Use: Ensure all pieces are securely connected to prevent accidental detachment during play.
Setup and Assembly
The LEGO DREAMZzz Nightmare Shark Submarine (71500) set contains 1,413 building elements. Detailed, comic-style building instructions are included in the box. For an interactive experience, you can also use the LEGO Builder app, which allows you to track progress and view builds in 3D.

Children following the building instructions, either printed or via the LEGO Builder app.
The set offers two primary building configurations:
- Stealth Shark Submarine: This mode features a secret prison compartment.
- Hammerhead Shark Battleship: This mode emphasizes combat features.

The two distinct building modes: a submarine and a battleship.

The set can be rebuilt into two different forms for varied play scenarios.
Operating Features
The Nightmare Shark Submarine set is designed with several interactive features:
- Minifigures: The set includes Mateo, Logan, Astrid, Dreamsmasher, and dreamer minifigures, along with Z-Blob and three Cyberling figures. These characters are integral to the DREAMZzz storyline and role-play.

The five minifigures included with the set, ready for imaginative play.
- Detachable Aircraft: Small flying aircraft can be detached from the main model.
- Stud Shooters: Engage in pretend battles with functional stud shooters.
- Missile Launchers: Missiles can be fired from the shark's mouth.

Detail of the stud shooters and the shark's mouth missile launcher.
- Secret Prison Compartment: The submarine mode includes a hidden compartment for capturing figures.

The secret prison compartment, a feature of the submarine build.
- Modular Boosters: The set features modular boosters that can connect with other LEGO DREAMZzz 2025 collection sets (sold separately) for expanded play.
Product Overview Video
This video provides a detailed overview of the LEGO DREAMZzz Nightmare Shark Submarine (71500) set, showcasing its features and play possibilities.
360-Degree Product View
A short video demonstrating a 360-degree view of the LEGO DREAMZzz Nightmare Shark Submarine (71500) set.
Maintenance
To ensure the longevity and cleanliness of your LEGO set, follow these maintenance guidelines:
- Cleaning: Use a soft brush or cloth to gently remove dust. For deeper cleaning, wash LEGO bricks by hand using water no warmer than 104°F (40°C) and a mild detergent. Rinse thoroughly with clear water and air dry at room temperature. Avoid using hot water, harsh chemicals, or abrasive cleaners, as these can damage the plastic.
- Storage: Store your LEGO set in a cool, dry place away from direct sunlight to prevent discoloration and warping of plastic elements.
Troubleshooting
If you encounter any issues with your LEGO DREAMZzz Nightmare Shark Submarine set, consider the following:
- Missing Pieces: In the rare event of missing pieces, please contact LEGO Customer Service directly. They can assist with replacement parts.
- Assembly Difficulty: If you are having trouble with a specific step, re-examine the building instructions carefully. The LEGO Builder app offers zoom and 3D rotation features that can provide additional clarity.
- Loose Connections: Ensure all bricks are firmly pressed together. LEGO bricks are designed for a secure fit.
Specifications
| Feature | Detail |
|---|---|
| Brand | LEGO |
| Model Name | Nightmare Shark Submarine |
| Model Number | 71500 |
| Manufacturer Part Number | 6527882 |
| UPC | 673419406826 |
| Number of Pieces | 1413 |
| Recommended Age | 9+ years |
| Material | Plastic |
| Item Dimensions (L x W x H) | 20 x 9.5 x 10 inches (approx. assembled) |
| Item Weight | 4.27 Pounds |
| Included Components | LEGO Building Elements |
Warranty and Support
LEGO products are manufactured to high-quality standards. For information regarding product warranty, missing parts, or any other support needs, please visit the official LEGO website or contact their customer service department directly. Details can typically be found on the LEGO packaging or their official support pages.
Online Support: www.lego.com/service
Contact Information: Refer to the contact details provided on the LEGO Group's official website for your region.