Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece
and leave with the element ID LEGO asks for, or a link to buy the part.
1,112 pieces in 308 part and color combinations, plus 10 minifigures.
The official piece count includes the 50 parts inside the set's minifigures, which this inventory lists separately; the remaining difference of 3 pieces is within the tolerance of the catalog data.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Technic Pin Connector Round [Slotted]Light Bluish Gray ×1Flat Silver ×2Light Bluish Gray is lighter than Flat Silver.
Plate 2 x 3Tan ×4Dark Tan ×2Tan is lighter than Dark Tan.
Plate 2 x 4Black ×7Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Windscreen 3 x 6 x 1 Curved with Rectangular Stud Holder in BottomDark TurquoisePart 35299Element 6292810×1
Trans-Orange
5 pieces
Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki EyeTrans-OrangePart 58176Element 6507868 or 61717641 spare in the box×2
Projectile, Spring Shooter Ammunition 8L BarTrans-OrangePart 15303Element 6296380 or 6072635×3
Dark Brown
2 pieces
Hair Ruffled with Blue Headband PatternDark BrownPart 69558pat0001Element 6591858 or 6320790×1
Hair Spiked with Red Headband PatternDark BrownPart 69560pat0001Element 6320793×1
Yellow
2 pieces
Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]YellowPart 28802Element 6168616×1
Technic Axle 3YellowPart 4519Element 6130007×1
Green
1 piece
Hair Swept Back, Tan with Headband PatternGreenPart 69562pat0001Element 6320794×1
Light Aqua
1 piece
Animal, Stingray with Dark Blue Markings, Red Eyes PrintLight AquaPart 67337pr0002Element 6341731×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Pearl Titanium
1 piece
Weapon SaiPearl TitaniumPart 98139Element 6270137 or 46468701 spare in the box×1
Trans-Clear
1 piece
Sail / Tail Fin, Triangular, Gold Shuriken, Dark Azure and Dark Red Design PrintTrans-ClearPart 78278Element 6342983×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 71756-1[No Color/Any Color]Part 78529Element 6345520×1
Minifigures
10 figures
Lloyd - Scuba (Seabound)Minifigure, checked as a whole figure×1
Maaray GuardMinifigure, checked as a whole figure×1
Jay - Scuba (Seabound)Minifigure, checked as a whole figure×1
Cole - Scuba (Seabound)Minifigure, checked as a whole figure×1
Zane - Scuba (Seabound)Minifigure, checked as a whole figure×1
Prince KalmaarMinifigure, checked as a whole figure×1
Kai - Scuba (Seabound)Minifigure, checked as a whole figure×1
Nya - Scuba (Seabound)Minifigure, checked as a whole figure×1
Wu BotMinifigure, checked as a whole figure×2
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for
the set number and each piece's element ID, the number printed beside the piece in the parts list at the back
of the instructions. This checker lists both.
Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from
older or second-hand sets.
Keep a record
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick
pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.