# LEGO 11204-1 — Mermaid Gabby's Aquarium Adventure (2025)

Source: https://www.brickmissing.com/sets/11204-1-mermaid-gabbys-aquarium-adventure
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

Explore an aquatic realm with LEGO Gabby's Dollhouse 11204-1 Mermaid Gabby's Aquarium Adventure, a 114-piece set from 2025. This scene presents the Gabby minidoll in her mermaid outfit, joined by MerCat and a Jellyfish figure. The set constructs a vibrant underwater environment, detailing it with shells, various plants, and sea life, ready for discovery. Characters can utilize a slide for descent or MerCat can occupy a bubble sphere designed for her to 'float'. An interactive coral element pivots, revealing a hidden treasure chest. The model’s assembly benefits from a large Starter Brick, simplifying the initial construction of its structures. This set accurately portrays an adventure from DreamWorks Animation’s Gabby’s Dollhouse: The Movie.

## Set facts

- Set number: 11204-1
- Name: Mermaid Gabby's Aquarium Adventure
- Theme: Gabby's Dollhouse › The Movie
- Released: 2025
- Pieces: 114
- Distinct part + colour lots: 59
- LEGO retail price: € 19,99
- Build difficulty: easy
- Repairability: 20.3% of this set's lots are hard to replace (12 of 59 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (59 lots, 114 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 1 | Slope Curved 2 x 1 No Studs [1/2 Bow] | Tan | 11477 | 6046922 | €0,06 |
| 4 | Brick Arch 1 x 3 x 3 [Gothic] | Medium Azure | 13965 | 6559756 | €0,21 |
| 4 | Brick Arch 1 x 3 x 3 [Gothic] | Tan | 13965 | 6058093 | €0,21 |
| 2 | Slope 45° 2 x 1 Triple with Inside Stud Holder | Black | 15571 | 6249783 | €0,10 |
| 1 | Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) | Dark Pink | 15573 | 6217794 | €0,06 |
| 1 | Rock - Heart Jewel with Shaft | Trans-Dark Pink | 15745 | 6240042 | €0,21 |
| 2 | Brick Arch 1 x 8 x 2 Raised | Tan | 16577 | 6313660 | €0,35 |
| 2 | Brick Arch 1 x 3 x 2 Inverted [Inside Bow] | Medium Azure | 18653 | 6357619 | €0,16 |
| 2 | Plate Special Round 2 x 2 with Center Stud (Jumper Plate) | Dark Pink | 18674 | 6223767 | €0,07 |
| 1 | Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle | Trans-Light Blue | 18990 | 6514148 | €0,64 |
| 1 | Bar Holder with Hole and Bar Handle | Black | 23443 | 6366181 | €0,07 |
| 1 | Tile Special 1 x 2 Grille with Bottom Groove | Dark Azure | 2412b | 6152109 | €0,06 |
| 2 | Tile 1 x 4 with Groove | Medium Azure | 2431 | 4624705 | €0,12 |
| 1 | Plate Special 8 x 8 x 2/3 with Four 1 x 4 Recessed Edges | Black | 2628 | 6559234 | — |
| 1 | Slide Curved Left 90° | Medium Azure | 28387 | 6545920 | €1,02 |
| 1 | Brick 2 x 3 | Tan | 3002 | 4159739 | €0,17 |
| 4 | Brick 1 x 1 | Medium Azure | 3005 | 4619652 | €0,07 |
| 2 | Brick 1 x 4 | Tan | 3010 | 4113916 | €0,16 |
| 2 | Plate 2 x 4 | Light Aqua | 3020 | 6138662 | €0,15 |
| 2 | Plate 2 x 3 | Medium Azure | 3021 | 4619513 | €0,13 |
| 2 | Plate 1 x 2 | Light Aqua | 3023 | 6146701 | €0,08 |
| 1 | Plate 4 x 4 | Tan | 3031 | 4243824 | €0,21 |
| 2 | Plate 2 x 8 | Tan | 3034 | 4113988 | €0,29 |
| 2 | Brick Round 2 x 2 Dome Top, Hollow Stud | Opal Trans-Dark Pink | 30367c | 6507969 | €0,28 |
| 3 | Brick Round 2 x 2 Dome Top, Hollow Stud | Trans-Light Blue | 30367c | 6507968 | €0,28 |
| 1 | Tile 1 x 2 with Groove | Black | 3069b | 306923 | €0,07 |
| 4 | Tile 1 x 2 with Groove | Dark Azure | 3069b | 6151659 | €0,07 |
| 2 | Brick 1 x 2 x 2 with Inside Stud Holder | Tan | 3245c | 4159279 | €0,13 |
| 3 | Plant, Plate 1 x 1 Round with 3 Leaves | Lime | 32607 | 6286831 | €0,06 |
| 2 | Slope 65° 2 x 2 x 2 with Bottom Tube | Tan | 3678b | 6391522 | €0,22 |
| 1 | Plate 1 x 4 | Light Aqua | 3710 | 6141592 | €0,12 |
| 1 | Brick Curved 1 x 2 x 1 No Studs | Light Aqua | 37352 | 6236575 | €0,11 |
| 2 | Brick Curved 1 x 2 x 1 No Studs | Medium Azure | 37352 | 6236578 | €0,11 |
| 1 | Plate 2 x 6 | Medium Azure | 3795 | 6146926 | €0,19 |
| 2 | Crown / Flower / Egg Shell Half | Medium Lavender | 39262 | 6456640 | €0,08 |
| 2 | Plate 8 x 8 with Rounded End | Black | 41948 | 6559235 | €0,93 |
| 3 | Plate Special 1 x 2 [Open O Top Clip] | Black | 44861 | 6537693 | €0,15 |
| 2 | Plant, Flower 2 x 2 Leaves - Angular | Bright Green | 4727 | 4143562 | €0,15 |
| 1 | Treasure Chest Bottom with Rear Slots, No Groove | Medium Lavender | 4738c | 6056226 | €0,52 |
| 1 | Tile Special 2 x 2 with Top Pin [Squared Holes] | Black | 49153 | 6313191 | €0,18 |
| 2 | Animal / Plant, Coral / Sea Weed | Coral | 49577 | 6292823 | €0,39 |
| 1 | Animal, Sea Life Set, Octopus | Vibrant Yellow | 49595a | — | — |
| 1 | Animal, Sea Life Set, Clam Shell Large | Vibrant Yellow | 49595b | — | — |
| 2 | Animal, Sea Life Set, Star Fish | Vibrant Yellow | 49595c | — | — |
| 2 | Animal, Sea Life Set, Clam Shell Small | Vibrant Yellow | 49595d | — | — |
| 2 | Animal, Sea Life Set, Fish with Bar | Vibrant Yellow | 49595e | — | — |
| 2 | Animal, Sea Life Set, Snail with Bar | Vibrant Yellow | 49595f | — | — |
| 2 | Animal, Sea Life Set, Seahorse with Bar | Vibrant Yellow | 49595g | — | — |
| 1 | Tube, Slide Straight | Trans-Bright Green | 49736 | 6514304 | €1,67 |
| 2 | Plant, Flower, Peony Rose with 2 Layers | Trans-Yellow | 5904 | 6550817 | €0,10 |
| 1 | Panel 1 x 6 x 5 with Under Sea, Coral Coral, Seahorse, Lime Squid, Rocks, Bubbles print | Trans-Light Blue | 59349pr0034 | 6542499 | — |
| 2 | Cone 1 x 1 [Top Groove] | Trans-Light Blue | 59900 | 6514027 | €0,08 |
| 2 | Brick Arch 1 x 4 x 2 | Tan | 6182 | 6031057 | €0,28 |
| 1 | Brick Curved 2 x 1 with Inverted Cutout | Tan | 78666 | 6383295 | €0,10 |
| 2 | Plate Round Corner 2 x 2 with 1 x 1 Cutout | White | 79491 | 6499714 | €0,17 |
| 2 | Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip) | Dark Pink | 80497 | 6382560 | €0,24 |
| 1 | Treasure Chest Lid, Flat with 2 Studs | White | 80835 | 6437723 | €0,68 |
| 1 | Brick Round 4 x 4 Centre Hole | Tan | 87081 | 6294592 | €0,36 |
| 1 | Plate Special 2 x 2 with Groove and Center Stud (Jumper) | Medium Azure | 87580 | 6126090 | €0,07 |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/11204-1-mermaid-gabbys-aquarium-adventure
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/11204-1-mermaid-gabbys-aquarium-adventure