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Bikini Bottom Undersea Party

3818-1·SpongeBob SquarePants·2012·4 minifigs·170 parts

Used Avg

$108.95

New Avg

$284.12

Add to your inventory Scan the minifigs

About Bikini Bottom Undersea Party

Bikini Bottom Undersea Party (3818-1) is a LEGO SpongeBob SquarePants set released in 2012, currently averaging $108.95 used on BrickLink. It comes with 4 minifigures worth a combined $38.66. The set has retired from retail, so secondary market is the only option. The full parts inventory runs 170 pieces.

Part-out value

The minifigures account for about 35% of the set's value ($38.66 out of $108.95). The remaining value is in the parts and the set as a complete package. Selling complete will likely net more than parting out unless you have specific demand for the individual figures.

Seller notes

Sealed copies sell for $284.12 vs $108.95 used — a 161% premium. If you have this set new in sealed box (NISB), price it accordingly.

Minifigures in Bikini Bottom Undersea Party (4)

Mrs. Puff - Pink Flower

bob038$16.37

Parts (170)

Cherries / Cherry Pair

×2

Wedge, Plate 3 x 6 Cut Corners

×2

Hinge Plate 1 x 4 Swivel (2429 / 2430)

×8

Tile 1 x 4

×2

Tile, Modified 1 x 2 with Bar Handle

×2

Bracket 1 x 2 - 1 x 4

Slope, Inverted 75 2 x 1 x 3

×8

Brick 1 x 1 x 5 - Solid Stud

×2

Brick 1 x 2 x 5

×4

Tile, Modified 1 x 1 with Clip

×3

Plate, Round 2 x 2 with Rounded Bottom (Boat Stud)

×6

Plate, Round 2 x 2 with Rounded Bottom (Boat Stud)

×2

Plate, Modified 2 x 2 with Pin Holes

×2

Brick 2 x 4

×2

Brick 2 x 2

Brick 1 x 2

×8

Brick 1 x 2

×6

Brick 1 x 2

×6

Brick 1 x 1

×9

Brick 1 x 1

×2

Brick 1 x 1

×3

Brick 1 x 4

×4

Brick 1 x 4

×2

Brick 1 x 4

×5

Brick 2 x 2 x 3

×4

Plant Brick, Round 1 x 1 with 3 Bamboo Leaves

×2

Plate 2 x 4

×2

Plate 2 x 4

×5

Plate 2 x 3

×2

Plate 2 x 3

×5

Plate 2 x 2

×4

Ice Pop (Freezer / Lollipop / Lolly / Pole / Popsicle / Stick)

Plate 1 x 2

×8

Plate 1 x 2

×6

Plate 1 x 2

Plate 1 x 1

Plate 4 x 6

×5

Plate 6 x 10

Plate 2 x 8

Plate 4 x 8

Plate, Round Corner 3 x 3

×4

Bar 4L (Lightsaber Blade / Wand)

×2

Bar 4L (Lightsaber Blade / Wand)

Slope 45 2 x 2

×2

Slope 45 2 x 1

×2

Slope 45 2 x 1 Triple with Inside Bar

×10

Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole on Ends with Slots

Brick, Round 1 x 1

×3

Brick, Round 1 x 1

×2

Tile 2 x 2

×2

Tile 2 x 2

×3

Tile 2 x 2

×2

Tile 1 x 2

×7

Tile 1 x 2

×2

Tile 1 x 2 with SW Computer Pattern

Plate, Modified 1 x 2 with Door Rail

×2

Technic, Axle 2L Notched

×2

Technic, Liftarm Thick 1 x 5

Brick 1 x 2 x 2 with Inside Stud Holder

×6

Technic, Pin Connector Plate 1 x 2 x 1 2/3 with 2 Holes on Top

×2

Technic, Pin 3L without Friction Ridges

Arch 1 x 8 x 2

Plant Stem with Bar (Carrot Top / Twig)

×4

Brick 1 x 3

×2

Brick 1 x 3

×2

Arch 1 x 4

Slope, Inverted 45 2 x 2 with Flat Bottom Pin

×4

Slope, Inverted 45 2 x 2 with Flat Bottom Pin

×2

Slope, Inverted 45 2 x 1

×2

Slope, Inverted 45 2 x 1

×2

Plate 1 x 6

×4

Plate 1 x 6

×2

Technic, Pin without Friction Ridges

×3

Slope 65 2 x 2 x 2 with Bottom Tube

×6

Turntable 2 x 2 Plate, Top

×2

Turntable 2 x 2 Plate, Base

×2

Slope 75 2 x 2 x 3 Double Convex

×2

Technic, Brick 1 x 2 with Hole

Plate 1 x 4

×3

Plate, Modified 1 x 2 with 1 Stud without Groove (Jumper)

Plate 2 x 6

×5

Plate 2 x 6

×2

Sticker Sheet for Set 3818 - (72333/4655091)

Hinge Brick 1 x 4 Swivel Top

×4

Hinge Brick 1 x 4 Swivel Top

Hinge Brick 1 x 4 Swivel Base

×4

Hinge Brick 1 x 4 Swivel Base

Plate 2 x 10

Minifigure, Utensil Cup

×2

Hinge Brick 1 x 2 Base

×2

Brick, Round 2 x 2 with Axle Hole

Cone 2 x 2 x 2 - Open Stud

Antenna 4H - Flat Top

Dish 8 x 8 Inverted (Radar) - Solid Studs

Plate, Round 2 x 2 with Axle Hole

Plate, Round 1 x 1

×16

Plate, Round 1 x 1

×3

Plate, Round 1 x 1

×3

Plate, Round 1 x 1

×2

Plate, Round 1 x 1

×5

Plate, Round 1 x 1

×7

Plate, Round 1 x 1

×6

Minifigure, Utensil Seat / Chair 2 x 2

Plate, Modified 1 x 1 with Open O Clip Thick (Vertical Grip)

×2

Tile, Round 2 x 2

×2

Slope 33 3 x 1

×2

Technic, Axle 1L with Pin with Friction Ridges

Container, Box 2 x 2 x 2

Container, Box 2 x 2 x 2 Door with Slot

Dish 3 x 3 Inverted (Radar)

×2

Slope 75 2 x 1 x 3 - Hollow Stud

×8

Minifigure, Utensil Tool Mallet / Hammer

Cone 1 x 1 with Top Groove

Container, Treasure Chest Bottom with Slots in Back

×2

Dish 2 x 2 Inverted (Radar)

×4

Dish 2 x 2 Inverted (Radar) with Dark Red Swirl and Medium Blue Spots Pattern (SpongeBob SquarePants Gary Snail Shell)

×2

Brick, Modified 1 x 1 with Studs on 2 Sides, Opposite

Boat, Ship's Wheel with Slotted Pin

Plate, Modified 1 x 2 with Bar Handle on Side - Closed Ends

×5

Panel 1 x 2 x 2 - Hollow Studs with Blue Porthole on Orange Background Pattern

×2

Panel 1 x 2 x 1

Brick, Modified 1 x 2 with Studs on 2 Sides

×3

Slope 30 1 x 1 x 2/3

×17

Slope 30 1 x 1 x 2/3

×5

Slope 30 1 x 1 x 2/3

×7

Wedge, Plate 6 x 3 Right

×4

Wedge, Plate 6 x 3 Left

×4

Brick, Round 2 x 2 Dome Top

×2

Brick, Round 2 x 2 Dome Top

×2

Brick, Round 2 x 2 Dome Top

Bar with Light Cover (Bulb) / Bionicle Barraki Eye

Hinge Plate 1 x 2 Locking with 2 Fingers on Side

Plate, Round 4 x 4 with Hole

Panel 1 x 4 x 3 with Side Supports - Hollow Studs

×2

Brick, Modified 1 x 1 x 3 with 2 Clips (Vertical Grip) - Hollow Stud

×2

Window 1 x 2 x 2 Flat Front

×2

Slope, Curved 2 x 1 x 1 1/3 with Recessed Stud

×2

Hinge Brick 2 x 2 Top Plate

×2

Bar 1 x 6 with Hollow Studs

Plant, Tree Palm Leaf Small 8 x 3

×5

Turntable 4 x 4 Square Base, Locking

Bar 1 x 4 x 2

×4

Minifigure, Utensil Dish 3 x 3

Tile 1 x 3

×2

Door 1 x 4 x 6 Round Top with Window and Keyhole, Reinforced Edge

Minifigure, Utensil Telescope

×2

Minifigure, Plume Feather Triple Compact / Flame / Water with Small Pin

×3

Technic, Brick 1 x 1 with Hole

×4

Technic, Pin with Friction Ridges and Tow Ball with Round Pin Hole

Brick, Modified 1 x 1 with Stud on Side

Panel 1 x 2 x 2 with Side Supports - Hollow Studs

Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)

×6

Plate, Modified 2 x 2 with Groove and 1 Stud in Center (Jumper)

Plate, Modified 1 x 2 with Clip with Center Cut on Top

×12

Brick, Round 2 x 2 with Axle Hole and Grille / Fluted Profile

Arch 1 x 6 Raised Arch

×2

Arch 1 x 6 Raised Arch

×3

Support 2 x 2 x 5 Bar on Tile Base with Hollow Stud and Stop Ring

Common questions about Bikini Bottom Undersea Party

How much is LEGO Bikini Bottom Undersea Party (3818-1) worth?

Bikini Bottom Undersea Party sells for an average of $108.95 used and $284.12 new/sealed on BrickLink based on 6 months of completed sales. As a retired set, prices tend to hold steady or appreciate over time, especially for complete sets with original packaging. Actual prices vary with completeness — missing minifigures or key parts will lower the value.

What minifigures come in LEGO set 3818-1?

This set includes 4 minifigures: Squidward - Pink Lei ($8.74), SpongeBob - Blue Lei ($6.20), Patrick - Pink Lei ($7.34), Mrs. Puff - Pink Flower ($16.37). The minifigures have a combined BrickLink value of $38.66. Each figure is linked above with individual pricing if you're looking to buy or sell specific characters.

Is it worth parting out LEGO Bikini Bottom Undersea Party?

The minifigures make up about 35% of the set value ($38.66 out of $108.95). Most of the value is in the complete set package, so selling it whole is likely the better move unless you have buyers lined up for specific figures.

Is LEGO Bikini Bottom Undersea Party (3818-1) retired?

Yes, Bikini Bottom Undersea Party was released in 2012 and has been retired from retail for several years. Retired LEGO sets are only available on the secondary market through BrickLink, eBay, or other resale platforms. At its current price point, it has appreciated since retirement.

How do I check if my Bikini Bottom Undersea Party set is complete?

Use the parts list on this page to check every piece and all 4 minifigures. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.

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