How many pieces does the LEGO Bikini Bottom Undersea Party (3818-1) have?

The LEGO Bikini Bottom Undersea Party set (3818-1) contains 471 pieces. It was released in 2012 as part of the LEGO SpongeBob SquarePants theme.

How can I find missing parts for LEGO set 3818-1?

On BrickMissing you can check which parts from the LEGO Bikini Bottom Undersea Party (3818-1) you already own. Add your LEGO collection and we'll show exactly which of the 471 pieces you're missing and which you already have.

Can I build the LEGO Bikini Bottom Undersea Party with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 471 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Bikini Bottom Undersea Party from?

The LEGO Bikini Bottom Undersea Party (3818-1) belongs to the LEGO SpongeBob SquarePants theme. You can browse all SpongeBob SquarePants sets on BrickMissing to find more sets from this theme.

Bikini Bottom Undersea Party

🏷️ 3818-1•🎨 SpongeBob SquarePants•📅 2012•🧱 471 parts•Intermediate

Bikini Bottom Undersea Party (3818-1) is a LEGO SpongeBob SquarePants from 2012. This page uses the available set and theme data until a fuller product description is available.

Parts Inventory

🧱 471 parts

Part	Color	Qty
Tile Special 1 x 1 with Clip with Rounded Tips 12825	Yellow	1×
Tile Special 1 x 1 with Clip with Rounded Tips 12825	Light Bluish Gray	3×
Plant, Cherries 22667	Lime	1×
Wedge Plate 3 x 6 Cut Corners 2419	Orange	2×
Tile 1 x 4 with Groove 2431	Dark Brown	2×
Tile Special 1 x 2 with Handle 2432	Yellow	2×
Bracket 1 x 2 - 1 x 4 [Square Corners] 2436	Light Bluish Gray	1×
Slope Inverted 75° 2 x 1 x 3 2449	Orange	8×
Brick 1 x 1 x 5 with Solid Stud 2453b	Reddish Brown	2×
Brick 1 x 1 x 5 with Solid Stud 2453b	Light Bluish Gray	1×

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Tile Special 1 x 2 with Handle	2432	Yellow	2×
Bracket 1 x 2 - 1 x 4 [Square Corners]	2436	Light Bluish Gray	1×
Slope Inverted 75° 2 x 1 x 3	2449	Orange	8×
Brick 1 x 1 x 5 with Solid Stud	2453b	Reddish Brown	2×
Brick 1 x 1 x 5 with Solid Stud	2453b	Light Bluish Gray	1×
Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges	2454a	Dark Gray	4×
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]	2654	Black	6×
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]	2654	Trans-Clear	2×
Plate Special 2 x 2 with 2 Pin Holes	2817	Light Bluish Gray	2×
Brick 2 x 4	3001	Light Bluish Gray	2×
Brick 2 x 2	3003	Dark Blue	1×
Brick 2 x 2	3003	Light Bluish Gray	1×
Brick 1 x 2	3004	Orange	8×
Brick 1 x 2	3004	Black	6×
Brick 1 x 2	3004	Light Bluish Gray	6×
Brick 1 x 1	3005	Orange	9×
Brick 1 x 1	3005	Black	2×
Brick 1 x 1	3005	Light Bluish Gray	3×
Brick 1 x 4	3010	Black	2×
Brick 1 x 4	3010	Orange	4×
Brick 1 x 4	3010	Light Bluish Gray	5×
Brick 2 x 2 x 3	30145	Light Bluish Gray	4×
Plant, Round 1 x 1 - 3 Bamboo Leaves	30176	Light Bluish Gray	2×
Plate 2 x 4	3020	Reddish Brown	5×
Plate 2 x 4	3020	Orange	2×
Plate 2 x 3	3021	Dark Bluish Gray	5×
Plate 2 x 3	3021	Tan	2×
Plate 2 x 2	3022	Red	4×
Food Popsicle / Lollipop	30222	Trans-Neon Green	1×
Plate 1 x 2	3023	Red	8×
Plate 1 x 2	3023	Black	6×
Plate 1 x 2	3023	Lime	1×
Plate 1 x 1	3024	White	1×
Plate 4 x 6	3032	Tan	5×
Plate 6 x 10	3033	Tan	1×
Plate 2 x 8	3034	Dark Bluish Gray	1×
Plate 4 x 8	3035	Dark Bluish Gray	1×
Plate Round Corner 3 x 3	30357	Red	4×
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder	30367b	Yellow	2×
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder	30367b	Red	2×
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder	30367b	Black	1×
Bar 4L (Lightsaber Blade / Wand)	30374	Black	1×
Bar 4L (Lightsaber Blade / Wand)	30374	White	2×
Slope 45? 2 x 2	3039	Orange	2×
Slope 45° 2 x 1 with Bottom Pin	3040b	Light Bluish Gray	2×
Slope 45° 2 x 1 Triple with Ovoid Bottom Pin	3048c	Orange	10×
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends	30552	Black	1×
Brick Round 1 x 1 Open Stud	3062b	Black	2×
Brick Round 1 x 1 Open Stud	3062b	Tan	3×
Tile 2 x 2 with Groove	3068b	Reddish Brown	2×
Tile 2 x 2 with Groove	3068b	Orange	3×
Tile 2 x 2 with Groove	3068b	White	2×
Tile 1 x 2 with Groove	3069b	Light Bluish Gray	2×
Tile 1 x 2 with Groove	3069b	Medium Blue	7×
Tile 1 x 2 with Groove	3069b	Black	1×
Tile 1 x 2 with Stylised Computer Console Print	3069bpr0086	Light Bluish Gray	1×
Plate Special 1 x 2 with Door Rail	32028	Light Bluish Gray	2×
Technic Axle 2 Notched	32062	Black	2×
Technic Beam 1 x 5 Thick	32316	White	1×
Brick 1 x 2 x 2 with Inside Stud Holder	3245c	Light Bluish Gray	6×
Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top]	32530	Black	2×
Technic Pin Long without Friction Ridges	32556	Tan	1×
Brick Arch 1 x 8 x 2	3308	Dark Bluish Gray	1×
Plant, Carrot Top	33183	Bright Green	2×
Brick 1 x 3	3622	Orange	2×
Brick 1 x 3	3622	Black	2×
Brick Arch 1 x 4	3659	Red	1×
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]	3660	Dark Bluish Gray	2×
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]	3660	Orange	4×
Slope Inverted 45° 2 x 1	3665	Orange	2×
Slope Inverted 45° 2 x 1	3665	Black	1×
Slope Inverted 45° 2 x 1	3665	Dark Bluish Gray	2×
Plate 1 x 6	3666	Orange	4×
Plate 1 x 6	3666	Red	2×
Technic Pin without Friction Ridges Lengthwise	3673	Light Bluish Gray	2×
Slope 65° 2 x 2 x 2 with Bottom Tube	3678b	Light Bluish Gray	6×
Turntable 2 x 2 Plate - Top	3679	Light Bluish Gray	2×
Turntable 2 x 2 Plate, Base	3680	Black	2×
Slope 75° 2 x 2 x 3 Double Convex	3685	Light Bluish Gray	2×
Technic Brick 1 x 2 [1 Pin Hole]	3700	Black	1×
Plate 1 x 4	3710	Reddish Brown	3×
Plate Special 1 x 2 with 1 Stud with Groove (Jumper)	3794b	Light Bluish Gray	1×
Plate Special 1 x 2 with 1 Stud with Groove (Jumper)	3794b	Black	1×
Plate 2 x 6	3795	Tan	5×
Plate 2 x 6	3795	Reddish Brown	2×
Hinge Brick 1 x 4 [Upper]	3830	Black	1×
Hinge Brick 1 x 4 [Upper]	3830	Red	4×
Hinge Brick 1 x 4 [Lower]	3831	Black	1×
Hinge Brick 1 x 4 [Lower]	3831	Red	4×
Plate 2 x 10	3832	Red	1×
Equipment Cup / Mug [Plain]	3899	Trans-Clear	2×
Hinge Brick 1 x 2 Base	3937	Dark Bluish Gray	2×
Brick Round 2 x 2 with Axle Hole	3941	Black	1×
Cone 2 x 2 x 2, Open Stud	3942c	Black	1×
Antenna 1 x 4 with Flat Top	3957b	White	1×
Dish 8 x 8 Inverted [Radar], Solid Studs, Rounded Anti-stud Underside	3961	Orange	1×
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	4032a	White	1×
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	4032a	Reddish Brown	1×
Seat / Chair 2 x 2 with Center Sprue Mark	4079b	Black	1×
Plate Special 1 x 1 with Clip Vertical [Thick U Clip]	4085c	Black	2×
Plate Special 1 x 1 with Clip Vertical [Thick U Clip]	4085c	White	1×
Tile Round 2 x 2 with Bottom Cross	4150	Black	2×
Slope 33° 3 x 1	4286	Light Bluish Gray	2×
Technic Axle Pin with Friction Ridges Lengthwise	43093	Black	1×
Box 2 x 2 x 2 [Hollow Studs]	4345b	Red	1×
Box 2 x 2 x 2 Door with Slot	4346	Trans-Clear	1×
Dish 3 x 3 Inverted [Radar]	43898	Red	1×
Dish 3 x 3 Inverted [Radar]	43898	Black	2×
Slope 75° 2 x 1 x 3 with Hollow Stud	4460b	Orange	8×
Tool Hammer / Mallet Large	4522	Black	1×
Treasure Chest Bottom with Rear Slots, with Groove	4738b	Reddish Brown	2×
Dish 2 x 2 Inverted [Radar]	4740	Black	4×
Dish 2 x 2 Inverted [Radar] with Dark Red Swirl and Medium Blue Spots Print	4740pr0016	Bright Pink	2×
Brick Special 1 x 1 with Studs on 2 Sides	47905	Tan	1×
Boat / Ship Wheel / Helm with Slotted Pin	4790b	Reddish Brown	1×
Plate Special 1 x 2 [Side Handle Closed Ends]	48336	Red	5×
Panel 1 x 2 x 1 [Square Corners]	4865a	Trans-Brown	1×
Panel 1 x 2 x 1 [Rounded Corners]	4865b	Black	1×
Brick Special 1 x 2 with Studs on 2 Sides	52107	Red	3×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Light Bluish Gray	6×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Orange	16×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Medium Blue	4×
Wedge Plate 6 x 3 Right	54383	Orange	4×
Wedge Plate 6 x 3 Left	54384	Orange	4×
Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye	58176	Trans-Red	1×
Cone 1 x 1 [Top Groove]	59900	Reddish Brown	1×
Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 9 Teeth	60471	Black	1×
Plate Round 4 x 4 with Pin Hole	60474	Dark Bluish Gray	1×
Panel 1 x 4 x 3 [Side Supports / Hollow Studs]	60581	Orange	2×
Brick Special 1 x 1 x 3 with 2 Clips Vertical [Hollow Stud, Open O Clips]	60583b	Black	1×
Window 1 x 2 x 2 Flat Front	60592	Reddish Brown	2×
Brick Curved 1 x 2 x 1 1/3 with Curved Top	6091	Black	2×
Hinge Brick 2 x 2 Top Plate Thin	6134	Black	2×
Bar 1 x 6 [Closed Studs]	6140	White	1×
Plate Round 1 x 1 with Solid Stud	6141	Pearl Gold	4×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Light Blue	2×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Yellow	1×
Plate Round 1 x 1 with Solid Stud	6141	Lime	4×
Plate Round 1 x 1 with Solid Stud	6141	Orange	15×
Plate Round 1 x 1 with Solid Stud	6141	Black	2×
Plate Round 1 x 1 with Solid Stud	6141	Flat Silver	5×
Plant, Palm Leaf Small	6148	Light Bluish Gray	5×
Turntable 4 x 4 Square Base, Locking	61485	Black	1×
Bar 1 x 4 x 2	6187	Yellow	4×
Equipment Dish / Plate / Bowl 3 x 3 [Plain]	6256	Bright Light Orange	1×
Tile 1 x 3	63864	White	2×
Door 1 x 4 x 6 Round Top with Window and Keyhole, Reinforced Edge	64390	Reddish Brown	1×
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3	64644	Dark Brown	2×
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3	64644	Black	1×
Flame / Headwear Accessory Plume / Feather, Triple Point	64647	Trans-Neon Orange	2×
Technic Brick 1 x 1 with Pin Hole	6541	Black	4×
Technic Pin with Friction Ridges Lengthwise and Towball	6628	Black	1×
Sticker Sheet for Set 3818-1	72333	Unknown	1×
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly]	73983	Red	8×
Brick Special 1 x 1 with Stud on 1 Side	87087	Dark Bluish Gray	1×
Panel 1 x 2 x 2 [Side Supports / Hollow Studs]	87552	Red	1×
Panel 1 x 2 x 2 with Side Supports - Hollow Studs with Porthole Blue on Orange Background Print	87552pr0006	Trans-Clear	2×
Plate Special 2 x 2 with Groove and Center Stud (Jumper)	87580	Medium Blue	6×
Plate Special 2 x 2 with Groove and Center Stud (Jumper)	87580	Dark Blue	1×
Plate Special 1 x 2 [Top Clip]	92280	Red	12×
Brick Round 2 x 2 [Grill]	92947	Tan	1×
Brick Arch 1 x 6 Raised Arch	92950	Light Bluish Gray	3×
Brick Arch 1 x 6 Raised Arch	92950	Black	2×
Tile Special 2 x 2 with Bar and Open Stud with Stop Ring (Flag Pole)	98549	White	1×

Build DNA

Parts inventory insights for Bikini Bottom Undersea Party

471 pieces puts this build +56% against the average SpongeBob SquarePants set and +63% against the average 2012 release.

LEGOSPONGEBOB SQUAREPANTS

Vs average SpongeBob SquarePants set

+56%+170 parts

This set471

Average set301

Average SpongeBob SquarePants set: 301 pieces across 13 other sets.

Vs average 2012 set

+63%+182 parts

This set471

Average set289

Average 2012 set: 289 pieces across 304 other sets.

Color profile

29different colors

Dominant color

Orange

Orange110x

24%

Black74x

16%

Light Bluish Gray72x

16%

Red61x

13%

Unique parts

3.7 pieces per unique type

124

Repeat factor

Average pieces per unique type.

Most used part

Plate Round 1 x 1 with Solid Stud

33x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

This site is not affiliated with or endorsed by the LEGO Group.

Build Insights🧩124unique parts🎨29different colors📊16.2avg. parts per color🏆33×Plate Round 1 x 1 with Solid Stud

🎨 All SpongeBob SquarePants sets 📅 All sets from 2012

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