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Underwater Adventure

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21598 Underwater Adventure

299 pieces in 119 part and color combinations, plus 3 minifigures.

The official piece count includes the 11 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

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.

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Piece checklist

Plates Special 95 pieces

  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Black Part 61252 Element 6308000 or 4517925 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Blue Part 60478 Element 6073890 ×12
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Blue Part 87580 Element 6126049 or 4565319 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Bright Pink Part 87580 Element 6251842 ×3
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Orange Part 87580 Element 6315197 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Green Part 2540 Element 4542391 or 4519974 ×12
  • Bracket 1 x 1 - 1 x 1 Light Bluish Gray Part 36841 Element 6248078 or 6227012 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Light Bluish Gray Part 99780 Element 6004990 ×1
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×2
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×3
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×1
  • Plate Special 1 x 2 with Clip Horizontal on Side Light Bluish Gray Part 11476 Element 6313114 or 6028812 ×1
  • Plate Special 1 x 2 with Handles on Ends Light Bluish Gray Part 18649 Element 6093058 ×1
  • Plate Special 1 x 2, Top Clip [Open O] Light Bluish Gray Part 44861 Element 6326078 ×10
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Reddish Brown Part 99780 Element 6174856 ×4
  • Plate Special 1 x 2 with Door Rail Reddish Brown Part 32028 Element 4645103 or 4541288 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Sand Green Part 87580 Element 6186826 ×9
  • Plate Special 1 x 2 Side Handle [Free Ends] Tan Part 2540 Element 4140593 or 4125271 ×1
  • Plate Special 1 x 2 with Clip Vertical on End Tan Part 78256 Element 6372047 ×2
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Tan Part 41740 Element 6257600 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Tan Part 87580 Element 4565387 ×4
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Tan Part 65509 Element 6294227 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Trans-Light Blue Part 87580 Element 6499141 or 6443647 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Yellow Part 87580 Element 6126050 or 4565386 ×3
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Yellow Part 65509 Element 6424448 ×1

Plates 52 pieces

  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 1 x 1 Bright Pink Part 3024 Element 6031883 or 4599540 ×4
  • Plate 2 x 2 Bright Pink Part 3022 Element 6096589 or 4245314 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×1
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×1
  • Plate 2 x 4 Dark Green Part 3020 Element 6618075 or 4586057 ×5
  • Plate 2 x 8 Dark Green Part 3034 Element 6174940 or 4271444 ×1
  • Plate 1 x 4 Dark Orange Part 3710 Element 6074892 or 4603740 ×2
  • Plate 2 x 4 Dark Orange Part 3020 Element 4535928 or 4164449 ×1
  • Plate 1 x 1 x 2/3 with Open Stud Dark Pink Part 86996 Element 6555320 ×4
  • Plate 1 x 2 Dark Tan Part 3023 Element 4528604 or 4497082 ×1
  • Plate 1 x 4 Dark Tan Part 3710 Element 4626904 or 4497088 ×1
  • Plate 2 x 2 Green Part 3022 Element 302228 ×2
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 ×2
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×2
  • Plate 2 x 12 Light Bluish Gray Part 2445 Element 4211360 ×1
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×1
  • Plate 4 x 12 Light Bluish Gray Part 3029 Element 4211401 ×1
  • Plate 1 x 1 x 2/3 with Open Stud Olive Green Part 86996 Element 6382541 ×2
  • Plate 1 x 1 Orange Part 3024 Element 4524929 or 4203454 ×1
  • Plate 1 x 2 Sand Green Part 3023 Element 4655080 or 4642428 ×2
  • Plate 1 x 3 Tan Part 3623 Element 4121921 or 362305 ×10
  • Plate 3 x 3 Tan Part 11212 Element 6115031 ×1
  • Plate 4 x 8 Tan Part 3035 Element 4509897 or 4191103 ×2
  • Plate 6 x 8 Tan Part 3036 Element 6070501 or 4114056 ×1
  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 ×1

Bricks 38 pieces

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1
  • Brick 2 x 2 Bright Pink Part 3003 Element 4550359 or 4245307 ×2
  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 ×1
  • Brick 2 x 2 Dark Orange Part 3003 Element 6212081 or 4597486 ×2
  • Brick 1 x 1 Light Bluish Gray Part 3005 Element 4211389 ×1
  • Brick 1 x 2 with Black and White Square Print Light Bluish Gray Part 3004pr0105 Element 6600962 or 6437901 ×2
  • Brick 2 x 2 Medium Azure Part 3003 Element 6603316 or 4653970 ×1
  • Brick 1 x 4 Sand Green Part 3010 Element 4521947 or 4517505 ×8
  • Brick 2 x 2 Sand Green Part 3003 Element 6075624 or 4642424 ×8
  • Brick 1 x 4 Tan Part 3010 Element 4113916 or 301005 ×1
  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×1
  • Brick 2 x 4 Tan Part 3001 Element 4114319 or 300105 ×4
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2

Tiles 35 pieces

  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile 1 x 4 with Groove Dark Orange Part 2431 Element 6074893 or 4165523 ×4
  • Tile 1 x 1 with Groove Dark Tan Part 3070b Element 6055172 ×1
  • Tile 1 x 3 Dark Tan Part 63864 Element 6015452 ×5
  • Tile 1 x 2 with Groove Lavender Part 3069b Element 6345796 or 6112962 ×12
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 ×1
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×4
  • Tile 2 x 3 Light Bluish Gray Part 26603 Element 6171894 ×1
  • Tile 1 x 1 with Groove Orange Part 3070b Element 4558595 or 4277770 ×1
  • Tile 2 x 2 with Pixelated Map Print Tan Part 3068bpr0590 Element 6385114 ×1
  • Tile 2 x 3 Tan Part 26603 Element 6175367 ×3
  • Tile 2 x 3 with Pixelated Orange Eye Print Tan Part 26603pr0005 Element 6600961 or 6299721 ×1

Bricks Special 14 pieces

  • Brick Special 1 x 1 with Stud on 1 Side Black Part 87087 Element 4558954 ×4
  • Brick Special 1 x 2 with Vertical Closed Handle on Edge Light Bluish Gray Part 34816 Element 6198932 ×1
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Light Bluish Gray Part 22885 Element 6123809 ×1
  • Brick Special 1 x 1 with Studs on 2 Adjacent Sides Tan Part 26604 Element 6175968 ×4
  • Brick Special 1 x 1 Studs on 4 Sides White Part 4733 Element 4111971 or 473301 ×1
  • Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side White Part 32952 Element 6552171 or 6548288 ×3

Plates Round Curved and Dishes 14 pieces

  • Plate Round 1 x 1 with Solid Stud Bright Green Part 6141 Element 6109808 ×2
  • Plate Round 1 x 1 with Solid Stud Medium Azure Part 6141 Element 6102986 ×6
  • Plate Round 1 x 1 with Solid Stud Pearl Gold Part 6141 Element 4523159 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Light Blue Part 2654 Element 6581775 or 6171733 ×2
  • Plate Special 1 x 2 Rounded with 2 Open Studs Yellow Part 35480 Element 6248971 ×2

Bars, Ladders and Fences 12 pieces

  • Bar Holder with Clip Orange Part 11090 Element 6390029 or 6162893 ×12

Plants & Trees 9 pieces

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Blue Part 24866 Element 6382540 ×2
  • Plant, Flower 2 x 2 Leaves - Angular Bright Green Part 4727 Element 4143562 ×3
  • Plant, Flower Stem with Bottom Bar Green Part 24855 Element 6269971 or 6135278 ×2
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals White Part 24866 Element 6206149 ×2

Bricks Round and Cones 5 pieces

  • Brick Round 1 x 1 Open Stud Lime Part 3062b Element 4212454 ×4
  • Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×1

Bricks Sloped 5 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Orange Part 54200 Element 4504371 or 4248195 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Tan Part 54200 Element 4516055 or 4278069 ×2
  • Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] Trans-Light Blue Part 22388 Element 6581705 or 6313366 ×1

Tiles Special 4 pieces

  • Tile Special 1 x 1 with Clip with Rounded Edges Sand Green Part 15712 Element 6348059 or 6125669 ×1
  • Tile Special 2 x 2 Inverted with Pixelated Dark Green, Dark Red, White and Gray Print (Minecraft Guardian) Sand Green Part 11203pr0002 Element 6600960 or 6192760 ×1
  • Tile Special Round 1 x 1 with Hollow Bar Trans-Clear Part 20482 Element 6507895 or 6186867 ×2

Minifig Accessories 3 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Pearl Gold Part 64644 Element 4538126 ×1
  • Equipment Shovel Blocky Reddish Brown Part 18791 Element 6442903 or 6093630 ×2

Minifig Shields, Weapons, & Tools 3 pieces

  • Weapon Axe Blocky Flat Silver Part 18788 Element 6089099 ×1
  • Weapon Sword Blocky Medium Azure Part 18787 Element 6093623 ×1
  • Weapon Trident, Blocky Sand Green Part 78801 Element 6347366 ×1

Projectiles / Launchers 3 pieces

  • Launcher, Brick Special 1 x 4 Spring Shooter with Light Bluish Gray Top Dark Bluish Gray Part 15400 Element 6324200 or 6048898 ×1
  • Projectile, Spring Shooter Ammunition 8L Bar Trans-Bright Green Part 15303 Element 6287551 or 6062599 ×2

Containers 2 pieces

  • Container Box 2 x 2 x 1 1/3 with Hinge Medium Nougat Part 7711 Element 6566342 ×1
  • Lid for Box 2 x 2, Hinged Medium Nougat Part 7712 Element 6566343 ×1

Plates Wedged 2 pieces

  • Wedge Plate 2 x 4 Black Part 51739 Element 4531412 ×1
  • Wedge Plate 2 x 4 Orange Part 51739 Element 6025385 ×1

Tiles Round and Curved 2 pieces

  • Tile Round 1 x 1 Quarter Orange Part 25269 Element 6173925 ×2

Bricks Curved 1 piece

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Bluish Gray Part 11477 Element 6029948 ×1

Minifigures 3 figures

  • Steve, Nougat Face, Lavender Helmet and Armor Minifigure, checked as a whole figure ×1
  • Deep Sea Diver Minifigure, checked as a whole figure ×1
  • Zombie, Sand Green Head (Drowned) Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

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