Rescue from the Merpeople

1 mould appears in no other set

• Mask Shark

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

• Door Frame 1 x 8 x 6 with Moulded Stone Print and ClipsDark Green
• Hips and Light Nougat LegsRed
• Hips and Light Nougat LegsDark Blue
• Weapon Pike / Spear [4 Side Blades]Medium Blue

10 parts appear in only a few other sets

• Hat, Chef / BakerTrans-Light Bluealso in 5960 The Mermaid Castle
• Brick Arch 1 x 4Medium Blue · ×4also in 6053 My First LEGO Town, 10193 Medieval Market Village
• Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]Dark Green · ×3also in CREATOR, DBASE-4696
• Brick 1 x 1 x 5 with Blocked Open or Hollow StudDark Green · ×2also in 7626 Jungle Cutter, 11387 Holiday House
• Brick Arch 1 x 5 x 4 [Continuous Bow]Greenalso in 75684 Welcome to Emerald City, 75688 Glinda's Wedding Day
• Hair LongDark Redalso in 7785 Arkham Asylum, 852001 Castle Chess Set
• Hair Short Bowl CutDark Orangealso in 4768-2, 5378 Hogwarts Castle (all Harry Potter)
• Animal, ScorpionRedalso in 7072 Captain Kragg's Pirate Boat, 7074 Skull Island, 8877 Vladek's Dark Fortress
• Brick 2 x 8Dark Bluealso in 45620 Science Kit Year 1-3, 45621 Science Kit Year 4-6, 75638 Battle at Arlong Park
• Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric…Green · ×2also in 6748 Boulder Cliff Canyon, 4552 Cargo Crane, 10669 Turtle Lair, 6434 Roadside Repair

1 mould first came out in 2005, including in this set

• Tail, Merman / Mermaid with White Scales Print

13 existing moulds first came out in their colour in 2005, including in this set

• Brick 2 x 2 CornerDark Blue · ×6
• Brick Arch 1 x 4Medium Blue · ×4
• Brick 1 x 1 x 5 with Blocked Open or Hollow StudDark Green · ×2
• Brick Sloped Inverted 45° 2 x 1Dark Blue · ×2
• Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs]Reddish Brown · ×2
• and 8 more

6 minifigure parts with their print are only in this set

• Minifig Head Harry Potter, Dual Sided, Glasses, Lightning Bolt, Gills / No…Light Nougat
• Minifig Head Merman, Fish Eyes, Green Lips Print [Blocked Open Stud]Light Bluish Gray
• Tail, Merman / Mermaid with White Scales PrintDark Green
• Torso Merman, Gray Print with Muscle Outlines Print, Dark Green Arms, Light…Dark Green
• Torso, Durmstrang Stag Coat of Arms Print, Light Nougat Arms and HandsDark Tan
• and 1 more