Mermaid Gabby's Aquarium Adventure brings the underwater world from DreamWorks Animation's Gabby's Dollhouse to life with 103 pieces designed for children aged 4 and over. The set includes a Gabby minidoll dressed in a mermaid outfit, accompanied by MerCat and Jellyfish figures, all ready for imaginative undersea adventures.

The aquarium playset features numerous interactive elements for discovery and play. Children can explore shells, aquatic plants, and sea life while enjoying a slide and a giant bubble feature that allows characters to appear as if they are floating underwater. Moving coral pieces reveal a hidden treasure chest, adding an element of surprise to play sessions.

Build and Play Features

The set includes a Starter Brick system for easier assembly, making it accessible for younger builders. Once constructed, the aquarium measures over 15 cm high, 23 cm wide and 7 cm deep, providing ample space for storytelling and role-play scenarios.

Children can recreate scenes from Gabby's Dollhouse: The Movie or invent their own aquarium adventures. The versatile design encourages both building skills and imaginative play, fitting within the broader LEGO Gabby's Dollhouse collection that introduces preschoolers to favourite characters through hands-on construction play.

Where to Buy LEGO Mermaid Gabby's Aquarium Adventure for the Best Price

We've been tracking prices for this set since July 2026. The recommended retail price is $22.99. It's currently available from 2 retailers, with LEGO offering the best price at $22.99. The lowest price we've ever recorded was $19.54 at Macy's in July 2026, 15% off RRP. Over its tracked history, prices have ranged from $19.54 to $49.36. This set has been retired by LEGO, so remaining stock from retailers may become harder to find at or below RRP.