How many pieces does the LEGO Underwater Adventure (21598-1) have?

The LEGO Underwater Adventure set (21598-1) contains 310 pieces. It was released in 2026 as part of the LEGO Minecraft theme.

How can I find missing parts for LEGO set 21598-1?

On BrickMissing you can check which parts from the LEGO Underwater Adventure (21598-1) you already own. Add your LEGO collection and we'll show exactly which of the 310 pieces you're missing and which you already have.

Can I build the LEGO Underwater Adventure 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 310 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Underwater Adventure from?

The LEGO Underwater Adventure (21598-1) belongs to the LEGO Minecraft theme. You can browse all Minecraft sets on BrickMissing to find more sets from this theme.

Underwater Adventure

🏷️ 21598-1•🎨 Minecraft•📅 2026•🧱 310 parts•Intermediate

Embark on a subterranean Minecraft journey with the LEGO Minecraft Underwater Adventure (21598-1) set, featuring 310 pieces for deep-sea exploration. This 2026 release transports players to the ocean depths, where Steve the deep-sea diver, armed with his sword and axe, navigates his boat through the waters. Accompanying Steve are a Dolphin and Tropical Fish, while a Drowned wields a trident, posing a threat amongst the coral reefs. The set recreates an Ocean Monument and an Ocean Ruin, concealing a buried treasure chest with gold and an emerald. Guardians and an Elder Guardian protect these aquatic domains, capable of firing projectile elements to thwart Steve's progress, adding action to the build. Steve's binoculars and map aid in charting the course through this block-built realm.

Parts Inventory

🧱 310 parts

Part	Color	Qty
Plate 2 x 2 3022	Black	1×
FLAT TILE 2X2 3068	Black	1×
Wedge Plate 2 x 4 51739	Black	1×
Brick Special 1 x 1 with Stud on 1 Side 87087	Black	4×
Bracket 1 x 2 - 2 x 2 21712	Black	2×
PLATE 1X1 W/HOLDER VERTICAL 52738	Black	2×
Brick 1 x 4 3010	Tan	1×
Brick 2 x 2 3003	Tan	1×
Brick 2 x 4 3001	Tan	4×
Plate 1 x 3 3623	Tan	10×

Showing 10 of 123 parts

🔓 Sign up to see all parts

PLATE 1X1 W/HOLDER VERTICAL	52738	Black	2×
Brick 1 x 4	3010	Tan	1×
Brick 2 x 2	3003	Tan	1×
Brick 2 x 4	3001	Tan	4×
Plate 1 x 3	3623	Tan	10×
Plate Special 1 x 2 Side Handle [Free Ends]	2540	Tan	1×
Plate 4 x 8	3035	Tan	2×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Tan	2×
Plate Special 2 x 2 with Groove and Center Stud (Jumper)	87580	Tan	4×
Plate 6 x 8	3036	Tan	1×
Plate 3 x 3	11212	Tan	1×
Tile 2 x 3	26603	Tan	3×
Brick Special 1 x 1 with Studs on 2 Adjacent Sides	26604	Tan	4×
Plate Special 1 x 4 with 2 Studs with Groove [New Underside]	41740	Tan	1×
Plate Special 2 x 4 with Groove and Two Center Studs (Jumper)	65509	Tan	4×
Plate Special 1 x 2 with Clip Vertical on End	78256	Tan	2×
FLAT TILE 2X2, NO. 590	1005	Tan	1×
Brick 2 x 2	3003	Dark Purple	1×
Plate Special 1 x 2 with Handle on End [Closed Ends]	60478	Dark Blue	12×
PLATE 2X2 W 1 KNOB	23893	Dark Blue-Violet	1×
Plant, Flower, Plate Round 1 x 1 with 5 Petals	24866	Dark Blue	2×
Plant, Flower 2 x 2 Leaves - Angular	4727	Bright Green	3×
Plate Round 1 x 1 with Solid Stud	6141	Black	2×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Orange	1×
Plate 1 x 1	3024	Orange	1×
FLAT TILE 1X1	3070	Orange	1×
Wedge Plate 2 x 4	51739	Orange	1×
Tile Round 1 x 1 Quarter	25269	Orange	2×
HOLDER Ã˜3.2 W/TUBE Ã˜3.2 HOLE	44873	Orange	12×
Plate 1 x 1 x 2/3 with Open Stud	86996	Black	4×
Brick 2 x 4	3001	Yellow	2×
Brick 2 x 2	3003	Yellow	2×
PLATE 2X2 W 1 KNOB	23893	Yellow	3×
Plate Special 1 x 2 Rounded with 2 Open Studs	35480	Yellow	2×
Plate Special 2 x 4 with Groove and Two Center Studs (Jumper)	65509	Yellow	1×
ROUND BRICK 1X1	3062	Lime	4×
MINI UPPER PART, NO. 6870	76382	Dark Bluish Gray	1×
FIGURE HEAD, NO. 108	111622	Light Lime	1×
Plate 2 x 2	3022	Light Bluish Gray	2×
Plate Special 1 x 2 Side Handle [Free Ends]	2540	Light Bluish Gray	12×
Plant, Flower Stem with Bottom Bar	24855	Light Bluish Gray	2×
Plate 2 x 4	3020	Very Light Orange	1×
Plate 1 x 4	3710	Very Light Orange	2×
Tile 1 x 4 with Groove	2431	Tan	4×
Brick 2 x 2	3003	Very Light Orange	2×
PLATE 2X2 W 1 KNOB	23893	Very Light Orange	2×
Brick 2 x 2	3003	Dark Bluish Gray	1×
Plate 1 x 2	3023	Dark Bluish Gray	1×
Plate 2 x 4	3020	Dark Bluish Gray	1×
Slope Curved 2 x 1 No Studs [1/2 Bow]	11477	Dark Bluish Gray	1×
Plate Special 1 x 2 with 5.9mm Centre Side Towball	14417	Dark Bluish Gray	3×
SPRING SHOOTER 1X4	72387	Dark Bluish Gray	1×
MINI BODY LOWER PART BLACK	73200	Chrome Pink	1×
Plate 2 x 4	3020	Black	5×
Plate 2 x 8	3034	Black	1×
FLAT TILE 1X2	3069	Lavender	12×
Brick 2 x 2	3003	Black	2×
Plate 1 x 1	3024	Black	4×
Plate 2 x 2	3022	Black	1×
PLATE 2X2 W 1 KNOB	23893	Black	3×
Brick 2 x 2	3003	Black	1×
Weapon Sword Blocky	18787	Reddish Brown	1×
Plate Round 1 x 1 with Solid Stud	6141	Black	6×
MINI BODY LOWER PART BLACK	73200	Dark Purple	1×
FIGURE HELMET NO.1	34091	Dark Purple	1×
ARMOUR, NO. 13	7805	Dark Purple	1×
Container Box 2 x 2 x 1 1/3 with Hinge	7711	Medium Nougat	1×
Lid for Box Box 2 x 2, Hinged	7712	Medium Nougat	1×
Plate 2 x 12	2445	Light Bluish Gray	1×
Brick 1 x 1	3005	Light Bluish Gray	1×
Plate 2 x 3	3021	Light Bluish Gray	1×
Plate 1 x 1	3024	Light Bluish Gray	2×
Plate 4 x 12	3029	Light Bluish Gray	1×
FLAT TILE 1X2	3069	Light Bluish Gray	4×
FLAT TILE 1X1	3070	Light Bluish Gray	1×
Plate 1 x 4	3710	Light Bluish Gray	2×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Light Bluish Gray	1×
Bracket 1 x 2 - 2 x 2 Inverted	99207	Light Bluish Gray	2×
Bracket 1 x 2 - 1 x 2 Inverted	99780	Light Bluish Gray	1×
Plate Special 1 x 2 5.9mm Towball Socket	14418	Light Bluish Gray	3×
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)	15573	Light Bluish Gray	1×
Plate Special 1 x 2 with Handles on Ends	18649	Light Bluish Gray	1×
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side	22885	Light Bluish Gray	1×
PLATE 2X2 W 1 KNOB	23893	Light Bluish Gray	2×
Tile 2 x 3	26603	Light Bluish Gray	1×
Brick Special 1 x 2 with Vertical Closed Handle on Edge	34816	Light Bluish Gray	1×
Bracket 1 x 1 - 1 x 1	36841	Light Bluish Gray	2×
PLATE 1X2 W. 1 HORIZONTAL SNAP	65458	Light Bluish Gray	1×
Plate Special 1 x 2 [Open O Top Clip]	44861	Light Bluish Gray	10×
Plate 1 x 1 x 2/3 with Open Stud	86996	Black	2×
MINI BODY LOWER PART BLACK	73200	Reddish Brown	1×
Plate Special 1 x 2 with Door Rail	32028	Black	4×
Bracket 1 x 2 - 1 x 2 Inverted	99780	Black	4×
Equipment Shovel Blocky	18791	Reddish Brown	2×
Brick 1 x 4	3010	Black	8×
Plate 1 x 2	3023	Black	2×
Brick 2 x 2	3003	Black	8×
Plate Special 2 x 2 with Groove and Center Stud (Jumper)	87580	Black	9×
Weapon Trident, Blocky	78801	Medium Lavender	1×
Plate 1x1 with Up Right Holder	44842	Black	1×
Plate 1 x 2	3023	Dark Tan	1×
Plate 1 x 4	3710	Dark Tan	1×
Tile 1 x 3	63864	Dark Tan	5×
FLAT TILE 1X1	3070	Dark Tan	1×
Weapon Axe Blocky	18788	Reddish Brown	1×
Plate 1x1 Round w/ 3.2 Shaft	31570	Trans-Clear	2×
PLATE 1X1	28554	Trans-Clear	1×
ROUND BRICK 1X1	35390	Trans-Clear	1×
ARROW 8M FOR SPRING SHOOTER	29340	Black	2×
PLATE 2X2 W 1 KNOB	92569	Trans-Neon Green	2×
PYRAMID RIDGED TILE 1X1X2/3	35343	Trans-Neon Green	1×
SLIDE SHOE ROUND 2X2	28558	Trans-Neon Green	2×
Plate Round 1 x 1 with Solid Stud	6141	Yellow	2×
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3	64644	Pearl Gold	1×
Brick 2 x 2	3003	White	2×
Brick Special 1 x 1 Studs on 4 Sides	4733	White	1×
Plant, Flower, Plate Round 1 x 1 with 5 Petals	24866	White	2×
Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side	32952	White	3×

Build DNA

Parts inventory insights for Underwater Adventure

310 pieces puts this build -22% against the average Minecraft set and -51% against the average 2026 release.

LEGOMINECRAFT

Vs average Minecraft set

-22%-86 parts

This set310

Average set396

Average Minecraft set: 396 pieces across 153 other sets.

Vs average 2026 set

-51%-318 parts

This set310

Average set628

Average 2026 set: 628 pieces across 427 other sets.

Color profile

25different colors

Dominant color

Black

Black80x

26%

Light Bluish Gray56x

19%

Tan46x

15%

Orange18x

Unique parts

3.7 pieces per unique type

Repeat factor

Average pieces per unique type.

Most used part

Brick 2 x 2

20x

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🧩82unique parts🎨25different colors📊12.4avg. parts per color🏆20×Brick 2 x 2

🎨 All Minecraft sets 📅 All sets from 2026

← Back to Buildable Sets