Ariel's Magical Underwater Palace

2 moulds appear in no other set

• Duplo Animal, Crab with White Eyes Print (Sebastian)
• Duplo Figure with Hair Curly Reddish Brown, Lime Mermaid Legs

5 parts come in a colour no other set has for that mould

• Duplo Brick Round 2 x 2 x 2Medium Azure · ×8
• Duplo Plant Bush / Tree Top / Rock Pile with 4 studsLavender · ×4
• Duplo Plant / LeafLavender · ×2
• Duplo Plate 4 x 6Light Aqua · ×2
• Duplo Plate 8 x 16Dark Purple

8 printed parts are only in this set

• Duplo Building Roof Spire 3 x 3 x 3 with Azure Starfish, Bubbles PrintMedium Lavender · ×4
• Duplo Brick 1 x 2 x 2 with Mirror PrintYellow
• Duplo Brick 1 x 2 x 2 with Shell Music Box PrintLight Aqua
• Duplo Brick 1 x 2 x 2 with Yellow/Orange Fish PrintTrans-Light Blue
• Duplo Brick 2 x 2 with Tiara PrintTrans-Yellow
• and 3 more

11 parts appear in only a few other sets

• Duplo Flower 4 x 4 x 1 with 4 Top StudsMedium Lavender · ×5also in 10418 Elsa & Bruni in the Enchanted Forest (all Duplo)
• Duplo Plant Vine 2 x 3 x 5 1/2 with Leaves and One End StudBright Green · ×2also in 10416 Caring for Animals at the Farm (all Duplo)
• Duplo Brick 1 x 2 x 2 with Side Cutouts and Channel in TopMedium Nougat · ×2also in 10411 Learn About Chinese Culture, 10469 Pizza Girls with Muffin and Bluey (all Duplo)
• Duplo Brick 2 x 3 x 2 with Curved TopYellow · ×2also in 10565 Creative Suitcase, 10887 Creative Fun (all Duplo)
• Duplo Plant Vine with Leaves and Two End Anti-StudsBright Greenalso in 10994 3in1 Family House, 45828 FIRST LEGO League Challenge 2024 - Submerged Discover Set
• Duplo Brick 2 x 2 x 1 1/2 with Curved TopBright Light Yellow · ×2also in 10972 Wild Animals of the Ocean, 10446 3in1 Wild Animal Families, 10448 3in1 Animals on Wheels (all Duplo)
• Duplo Brick 2 x 10 x 2 ArchLight Aquaalso in 10956 Amusement Park, 10996 Lightning McQueen & Mater's Car Wash Fun, 10466 Train Ride with Grandpa Pig (all Duplo)
• Duplo Brick 2 x 4 Curved BottomCoral · ×3also in 10966 Bath Time Fun: Floating Animal Island, 10978 Creative Building Time, 10477 3 in 1 My First Creative Cute Pets, 10472 Animal Building Game (all Duplo)
• Duplo Plate Round 4 x 8 Semi-CircleBright Light Yellow · ×3also in 10922 Ariel's Undersea Castle, 10975 Wild Animals of the World, 10432 Peppa Pig Boat Trip, 45828 FIRST LEGO League Challenge 2024 - Submerged Discover Set
• Duplo Playground Slide Curved Right 90°, RoundedMedium Azurealso in 10993 3in1 Tree House, 10453 Funfair, 10465 Mickey Mouse Clubhouse with Minnie & Pluto, 10464 Team Spidey Webquarters (all Duplo)
• Duplo SwingMedium Azurealso in 10864 Large Playground Brick Box, 45024 STEAM Park, 10914 Deluxe Brick Box, 10991 Dream Playground

12 parts are otherwise only found in Duplo sets

• Duplo Brick 2 x 3 with Curved BottomLight Aqua · ×4
• Duplo Brick 2 x 2Coral · ×3
• Duplo Brick 1 x 2 x 2 with Bottom TubeCoral · ×2
• Duplo Brick 2 x 3 with Curved BottomBright Light Yellow · ×2
• Duplo Brick 2 x 4Light Aqua · ×2
• and 7 more

2 moulds first came out in 2024, including in this set

• Duplo Plant Vine 2 x 3 x 5 1/2 with Leaves and One End Stud×2
• Duplo Figure with Hair High Red, Light Aqua Shell, Medium Azure Mermaid Legs

1 existing mould first came out in this colour in 2024, including in this set

• Duplo Flower 4 x 4 x 1 with 4 Top StudsMedium Lavender · ×5