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241

LEGO

Sea Serpent

Reference: #40912 · released in 2026

Themes: LEGO Ideas and CUUSOO

The LEGO Sea Serpent set was released in 2026 in the LEGO Ideas and CUUSOO theme. This building set features 241 pieces and 2 knight minifigures. It includes a model ship with a fabric sail, moving rudders and a cargo hold.

This set from LEGO includes a total of 241 parts distributed across 97 distinct unique parts.

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241

Total parts

97

Unique parts

LEGO

Universe

Download instructions 12.2 MB

Set parts (97)

241 parts in the box

Hips and Black Legs

Hips and Black Legs

Black

Torso, Silver Armor, Gold Trim, Reddish Brown Belt Print, Dark Blue Arms, Pearl Gold Hands

Torso, Silver Armor, Gold Trim, Reddish Brown Belt Print, Dark Blue Arms, Pearl Gold Hands

Flat Silver

Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly]

Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly]

Black

Equipment Goblet / Glass

Equipment Goblet / Glass

Pearl Gold

Barrel 2 x 2 x 2

Barrel 2 x 2 x 2

Dark Brown

Container Box 2 x 2 x 1 Reinforced Bottom

Container Box 2 x 2 x 1 Reinforced Bottom

Medium Nougat

Plate 2 x 4

White

Plate 2 x 4

Reddish Brown

Plate 2 x 3

Black

Plate 2 x 3

Reddish Brown

Plate 1 x 2

White

Plate 1 x 2

Black

Plate 4 x 6

Reddish Brown

Brick Sloped 45° 2 x 2

Brick Sloped 45° 2 x 2

Black

Brick Round 1 x 1 Open Stud

Brick Round 1 x 1 Open Stud

Black

Tile 1 x 2 with Groove

Tile 1 x 2 with Groove

Dark Bluish Gray

Tile 1 x 2 with Groove

Tile 1 x 2 with Groove

Blue

Plate Special 1 x 1 x 2/3 Half Round with Side Stud

Plate Special 1 x 1 x 2/3 Half Round with Side Stud

Light Bluish Gray

Plate Special 1 x 1 x 2/3 Half Round with Side Stud

Plate Special 1 x 1 x 2/3 Half Round with Side Stud

Blue

Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]

Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]

Reddish Brown

Minifig Head Joey / Chamille, Raised Eyebrow, Eyelashes, Peach Lips, Smirk Print

Minifig Head Joey / Chamille, Raised Eyebrow, Eyelashes, Peach Lips, Smirk Print

Yellow

Plate 1 x 6

Tan

Plate 1 x 4

Black

Plate 1 x 4

Reddish Brown

Technic Axle 10

Technic Axle 10

Black

Plate 2 x 6

Reddish Brown

Helmet Castle with Neck Protector

Helmet Castle with Neck Protector

Flat Silver

Hinge Brick 1 x 2 Base

Hinge Brick 1 x 2 Base

Black

Antenna 1 x 4 with Flat Top

Antenna 1 x 4 with Flat Top

Reddish Brown

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)

Dark Brown

Tile 1 x 8 with Groove

Tile 1 x 8 with Groove

Blue

Plate 2 x 16

Red

Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version

Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version

Light Bluish Gray

Flag 4 x 1 Wavy [First Wave Right]

Flag 4 x 1 Wavy [First Wave Right]

Pearl Gold

Flag 4 x 1 Wavy [First Wave Right]

Flag 4 x 1 Wavy [First Wave Right]

Dark Blue

Shield Triangular with Spiked Top with Red/Blue Griffin on Yellow Background Print

Shield Triangular with Spiked Top with Red/Blue Griffin on Yellow Background Print

Flat Silver

Brick Sloped 18° 2 x 1 x 2/3

Brick Sloped 18° 2 x 1 x 2/3

Dark Brown

Brick Curved 1 x 2 x 1 2/3 with 1 Cutout

Brick Curved 1 x 2 x 1 2/3 with 1 Cutout

Red

Hinge Brick 2 x 2 Top Plate Thin

Hinge Brick 2 x 2 Top Plate Thin

Black

Plate Round 1 x 1 with Solid Stud

Plate Round 1 x 1 with Solid Stud

Pearl Gold

Tile 2 x 2 Corner

Tile 2 x 2 Corner

Blue

Tile Special Round 2 x 2 with Hole

Tile Special Round 2 x 2 with Hole

Black

Weapon Sword with Thick Crossguard (Roman Gladius)

Weapon Sword with Thick Crossguard (Roman Gladius)

Flat Silver

Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side

Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side

White

Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders

Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders

Reddish Brown

Wedge Plate 2 x 2 Left

Wedge Plate 2 x 2 Left

Reddish Brown

Wedge Plate 2 x 2 Right

Wedge Plate 2 x 2 Right

Reddish Brown

Tile Round 1 x 1 Quarter

Tile Round 1 x 1 Quarter

Reddish Brown

Tile 2 x 3

Light Bluish Gray

Minifig Head, Raised Thick Eyebrow, Dark Orange Moustache and Beard, Open Mouth Print

Minifig Head, Raised Thick Eyebrow, Dark Orange Moustache and Beard, Open Mouth Print

Yellow

Brick Special 1 x 2 Palisade [aka Log]

Brick Special 1 x 2 Palisade [aka Log]

Black

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced

Black

Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side

Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side

Black

Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side

Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side

Dark Bluish Gray

Plate Special 1 x 2 Rounded with 2 Open Studs

Plate Special 1 x 2 Rounded with 2 Open Studs

Black

Bracket 1 x 1 - 1 x 1 Inverted

Bracket 1 x 1 - 1 x 1 Inverted

Reddish Brown

Window Pane Latticed 1 x 2 x 2

Window Pane Latticed 1 x 2 x 2

Pearl Gold

Wedge Plate 4 x 2 Right

Wedge Plate 4 x 2 Right

Reddish Brown

Wedge Plate 4 x 2 Left

Wedge Plate 4 x 2 Left

Reddish Brown

Technic Axle Pin with Friction Ridges Lengthwise

Technic Axle Pin with Friction Ridges Lengthwise

Blue

Wedge Plate 3 x 2 Right

Wedge Plate 3 x 2 Right

Blue

Wedge Plate 3 x 2 Left

Wedge Plate 3 x 2 Left

Blue

Plate Special 1 x 2 [Side Handle Closed Ends]

Plate Special 1 x 2 [Side Handle Closed Ends]

Black

Tile Special 2 x 2 with Top Pin [Squared Holes]

Tile Special 2 x 2 with Top Pin [Squared Holes]

Black

Wedge Plate 2 x 4

Wedge Plate 2 x 4

Black

Weapon Axe Head, Clip-on (Viking) [Thick Clip]

Weapon Axe Head, Clip-on (Viking) [Thick Clip]

Flat Silver

Wedge Plate 6 x 3 Right

Wedge Plate 6 x 3 Right

Reddish Brown

Wedge Plate 6 x 3 Left

Wedge Plate 6 x 3 Left

Reddish Brown

Technic Axle Connector Smooth [with x Hole + Orientation]

Technic Axle Connector Smooth [with x Hole + Orientation]

Reddish Brown

Cone 1 x 1 [Top Groove]

Cone 1 x 1 [Top Groove]

Reddish Brown

Plate Special 1 x 2 with Clips Horizontal [Open O Clips]

Plate Special 1 x 2 with Clips Horizontal [Open O Clips]

Black

Technic Pin Connector Round [Slotted]

Technic Pin Connector Round [Slotted]

Reddish Brown

Weapon Lightsaber Hilt with Bottom Ring

Weapon Lightsaber Hilt with Bottom Ring

Black

Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides

Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides

Black

Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)

Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)

Black

Bracket 1 x 1 - 1 x 2 Inverted

Bracket 1 x 1 - 1 x 2 Inverted

Reddish Brown

Brick Round, Curved 10 x 2 x 2 with Rounded End Left

Brick Round, Curved 10 x 2 x 2 with Rounded End Left

Black

Brick Round, Curved 10 x 2 x 2 with Rounded End Right

Brick Round, Curved 10 x 2 x 2 with Rounded End Right

Black

Brick Curved 2 x 1 with Inverted Cutout

Brick Curved 2 x 1 with Inverted Cutout

Black

Bracket 1 x 1 - 1 x 2

Bracket 1 x 1 - 1 x 2

Reddish Brown

Tile 2 x 4 with Groove

Tile 2 x 4 with Groove

Reddish Brown

Plate Special 2 x 2 with Groove and Center Stud (Jumper)

Plate Special 2 x 2 with Groove and Center Stud (Jumper)

Dark Bluish Gray

Plate Special 2 x 2 with Groove and Center Stud (Jumper)

Plate Special 2 x 2 with Groove and Center Stud (Jumper)

Reddish Brown

Equipment Oar / Paddle [Reinforced]

Equipment Oar / Paddle [Reinforced]

Reddish Brown

Bar 3L

White

Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]

Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]

Reddish Brown

Technic Pin 1/2 with Friction

Technic Pin 1/2 with Friction

Dark Bluish Gray

Window 1 x 2 x 2 Castle

Window 1 x 2 x 2 Castle

Reddish Brown

Brick Arch 1 x 6 Raised Arch

Brick Arch 1 x 6 Raised Arch

Black

Brick Curved 4 x 1 Double, No Studs

Brick Curved 4 x 1 Double, No Studs

Black

Weapon Pike / Spear Flat End

Weapon Pike / Spear Flat End

Flat Silver

Tile Round 1 x 1

Tile Round 1 x 1

Reddish Brown

Tile Round 1 x 1 with Cookie Print

Tile Round 1 x 1 with Cookie Print

Medium Nougat

Tile Round 1 x 1 with Golden Crown Print

Tile Round 1 x 1 with Golden Crown Print

Pearl Gold

Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]

Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]

Pearl Gold

Bracket 1 x 2 - 1 x 2 Inverted

Bracket 1 x 2 - 1 x 2 Inverted

Reddish Brown

Sail, 9 x 12 with 4 Holes in White with Red Griffin Print

Sail, 9 x 12 with 4 Holes in White with Red Griffin Print

White

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