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Java Edition · Ocean

The Mansion Island — Minecraft Java Seed

Minecraft Seed
-3420545464665791887
Edition Java Edition
Version 1.21.4
Spawn Biome Ocean
Good For Hardcore · Island · Loot Rich · Survival
Open in Seed Map →

Spawn in Ocean with seed -3420545464665791887 on Minecraft Java Edition with a Woodland Mansion just 132 blocks away.

This seed qualifies as a Hardcore, Island, Loot Rich, Survival seed based on our scoring system, which evaluates structure proximity, biome variety, and spawn safety.

The Mansion Island biome map preview
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Closest of Each Type
Woodland Mansion Woodland Mansion 132 blocks
Shipwreck Shipwreck 189 blocks
Village Village 228 blocks
Ocean Monument Ocean Monument 237 blocks
Ocean Ruin Ocean Ruin 249 blocks
Ruined Portal Ruined Portal 268 blocks
Trial Chambers Trial Chambers 271 blocks
Igloo Igloo 685 blocks
Buried Treasure Buried Treasure 824 blocks
Pillager Outpost Pillager Outpost 873 blocks
Ancient City Ancient City 1404 blocks

Key Highlights

  • Woodland Mansion at (120, 56), 132 blocks from origin — Totems of Undying from Evokers and massive loot hauls.
  • Village at (136, 184), 228 blocks from origin — Beds, food, iron tools, and trading on your first day.
  • Ocean Monument at (-168, 168), 237 blocks from origin — Gold blocks, sponge rooms, and Elder Guardian challenges.
  • Trial Chambers at (185, 199), 271 blocks from origin — The breeze mob, trial keys, and randomised combat encounters.
  • Igloo at (88, 680), 685 blocks from origin — Secret basement with a zombie villager to cure.
  • Pillager Outpost at (568, 664), 873 blocks from origin — An early source of crossbows and a raid farm opportunity.
  • 29 Biomes within 1,000 blocks — one of the highest biome counts we have recorded.

Nearest Structures

Closest of each type · distances from world origin (0, 0)

Woodland Mansion - Minecraft Structure Woodland Mansion
120, 56
132 blocks
Shipwreck - Minecraft Structure Shipwreck
-168, -88
189 blocks
Village - Minecraft Structure Village
136, 184
228 blocks
Ocean Monument - Minecraft Structure Ocean Monument
-168, 168
237 blocks
Ocean Ruin - Minecraft Structure Ocean Ruin
168, -184
249 blocks
Ruined Portal - Minecraft Structure Ruined Portal
104, 248
268 blocks
Trial Chambers - Minecraft Structure Trial Chambers
185, 199
271 blocks
Igloo - Minecraft Structure Igloo
88, 680
685 blocks
Buried Treasure - Minecraft Structure Buried Treasure
665, -487
824 blocks
Pillager Outpost - Minecraft Structure Pillager Outpost
568, 664
873 blocks
Ancient City - Minecraft Structure Ancient City
1160, 792
1404 blocks

Structure Details

Here's what we found near the world origin when scanning this Minecraft Java seed. Distances are measured from 0, 0 — your actual spawn point may be up to ~200 blocks away.

Woodland Mansion

Woodland Mansion

1 found within 132 blocks

Massive dark-oak structure with totems of undying, enchanted books, and rare loot rooms.

  • 120, 56 132 blocks
Shipwreck

Shipwreck

30 found within 1,421 blocks

Treasure / supply / map chests. Sunken ships often hide a treasure map nearby.

  • -168, -88 189 blocks
  • 184, -184 260 blocks
  • 40, 296 298 blocks
  • -136, 280 311 blocks
  • 472, 104 483 blocks
  • -152, 488 511 blocks
  • 312, 440 539 blocks
  • 184, -584 612 blocks
Village

Village

2 found within 1,465 blocks

Trade with villagers for enchanted gear, mending books, and discounts. Iron golems patrol the centre.

  • 136, 184 228 blocks
  • 1128, -936 1465 blocks
Ocean Monument

Ocean Monument

11 found within 2,962 blocks

Underwater fortress guarded by Guardians and Elder Guardians. 8 gold blocks hidden in the core.

  • -168, 168 237 blocks
  • -296, -376 478 blocks
  • -776, -232 809 blocks
  • 264, -872 911 blocks
  • -760, 1112 1346 blocks
  • -1352, 1256 1845 blocks
  • -1992, 216 2003 blocks
  • -1304, 1816 2235 blocks
Ocean Ruin

Ocean Ruin

30 found within 1,162 blocks

Drowned-village ruins underwater — buried-treasure maps and emeralds.

  • 168, -184 249 blocks
  • -216, -168 273 blocks
  • -312, 104 328 blocks
  • 120, 360 379 blocks
  • -248, 360 437 blocks
  • 456, -184 491 blocks
  • -472, -184 506 blocks
  • 504, 88 511 blocks
Ruined Portal

Ruined Portal

18 found within 1,496 blocks

Pre-built nether portal frame; loot chest with gold, obsidian, and flint & steel.

  • 104, 248 268 blocks
  • -264, 72 273 blocks
  • 184, -376 418 blocks
  • -584, -520 781 blocks
  • 248, 792 829 blocks
  • 872, 264 911 blocks
  • -504, 792 938 blocks
  • 120, -968 975 blocks
Trial Chambers

Trial Chambers

25 found within 1,491 blocks

Mob-wave arenas full of trial keys, ominous keys, and 1.21 loot — Mace fragments, pottery sherds.

  • 185, 199 271 blocks
  • -215, -233 317 blocks
  • 55, -425 428 blocks
  • -441, 263 513 blocks
  • 663, 71 666 blocks
  • 647, -199 676 blocks
  • -791, 313 850 blocks
  • 217, 825 853 blocks
Igloo

Igloo

1 found within 685 blocks

Some have a basement under the carpet: zombie villager + golden apple + brewing stand.

  • 88, 680 685 blocks
Buried Treasure

Buried Treasure

5 found within 1,299 blocks

Always contains a Heart of the Sea — needed for a Conduit.

  • 665, -487 824 blocks
  • -967, 313 1016 blocks
  • 697, -983 1205 blocks
  • -919, -903 1288 blocks
  • -919, -919 1299 blocks
Pillager Outpost

Pillager Outpost

2 found within 1,106 blocks

Beat the captain for Bad Omen, then trigger a raid in a village for emeralds and totems.

  • 568, 664 873 blocks
  • 152, 1096 1106 blocks
Ancient City

Ancient City

9 found within 2,984 blocks

Contains echo shards, disc fragments, and enchanted gear hidden in the Deep Dark. Watch for the Warden.

  • 1160, 792 1404 blocks
  • -2280, 216 2290 blocks
  • -2248, 456 2293 blocks
  • -2264, 1384 2653 blocks
  • -2152, 1640 2705 blocks
  • -2680, 392 2708 blocks
  • -2888, 552 2940 blocks
  • -2584, -1480 2977 blocks
Ocean biome
Spawn Biome

Ocean

Origin 0, 0

This Java seed spawns you in a Ocean biome.

132
Blocks to nearest structure
36
Structures within 700 blocks

Seed Info

Seed
-3420545464665791887
Edition
Java Edition
Version
1.21.4
Spawn Biome
Ocean
At a glance

A Java 1.21.4 Ocean seed with 11 structure types, closest just 132 blocks from origin.

About This Seed

Looking for the best Minecraft Java seed 1.21.4? This seed spawns you in a Ocean .

Use seed -3420545464665791887 in Minecraft Java Edition 1.21.4 to try it yourself.

Structures near spawn
  • Woodland Mansion132 blocks
  • Shipwreck189 blocks
  • Village228 blocks
  • Ocean Monument237 blocks
  • Ocean Ruin249 blocks
Why it scores well
  • 4 playstyle matches (Hardcore, Island, Loot Rich, Survival)
  • 11 different structure types in range
Watch out for
  • Woodland Mansion — Vindicators and Evokers will rush the door; bring totems.
  • Ocean Monument — Elder Guardians inflict Mining Fatigue. Bring milk or invisibility potions.
  • Trial Chambers ramp up — clear early arenas before the ominous boss waves.
  • Pillager Outpost — Bad Omen is easy to pick up by accident, then any village triggers a raid.
  • Ancient Cities house the Warden — bring wool, no torches near the sculk.

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How to Use This Seed

Open Minecraft Java Edition, tap Create New, and under Advanced paste the seed below into the seed field. The version on this page must match the version you load in.

-3420545464665791887 Full setup guide →

Explore This Seed on the Map

Jump to:
🏠
Village
🏛️
Stronghold
🏗️
Monument
⛩️
Temple
🏚️
Mansion
X: 0   Z: 0   |   -   |   Seed: -
Overworld — Java 1.21.4

Structures Found

Sorted by distance from 0,0

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Open Full Interactive Map →

All Structures within 1,900 Blocks

134 structures found · distances from world origin (0, 0)

Toggle structure list
Woodland Mansion Woodland Mansion
120, 56
132 blocks
Shipwreck Shipwreck
-168, -88
189 blocks
Village Village
136, 184
228 blocks
Ocean Monument Ocean Monument
-168, 168
237 blocks
Ocean Ruin Ocean Ruin
168, -184
249 blocks
Shipwreck Shipwreck
184, -184
260 blocks
Ruined Portal Ruined Portal
104, 248
268 blocks
Trial Chambers Trial Chambers
185, 199
271 blocks
Ocean Ruin Ocean Ruin
-216, -168
273 blocks
Ruined Portal Ruined Portal
-264, 72
273 blocks
Shipwreck Shipwreck
40, 296
298 blocks
Shipwreck Shipwreck
-136, 280
311 blocks
Trial Chambers Trial Chambers
-215, -233
317 blocks
Ocean Ruin Ocean Ruin
-312, 104
328 blocks
Ocean Ruin Ocean Ruin
120, 360
379 blocks
Ruined Portal Ruined Portal
184, -376
418 blocks
Trial Chambers Trial Chambers
55, -425
428 blocks
Ocean Ruin Ocean Ruin
-248, 360
437 blocks
Ocean Monument Ocean Monument
-296, -376
478 blocks
Shipwreck Shipwreck
472, 104
483 blocks
Ocean Ruin Ocean Ruin
456, -184
491 blocks
Ocean Ruin Ocean Ruin
-472, -184
506 blocks
Ocean Ruin Ocean Ruin
504, 88
511 blocks
Shipwreck Shipwreck
-152, 488
511 blocks
Trial Chambers Trial Chambers
-441, 263
513 blocks
Shipwreck Shipwreck
312, 440
539 blocks
Ocean Ruin Ocean Ruin
136, -536
552 blocks
Ocean Ruin Ocean Ruin
-552, 24
552 blocks
Ocean Ruin Ocean Ruin
-264, -504
568 blocks
Shipwreck Shipwreck
184, -584
612 blocks
Ocean Ruin Ocean Ruin
472, 392
613 blocks
Shipwreck Shipwreck
-616, 232
658 blocks
Trial Chambers Trial Chambers
663, 71
666 blocks
Trial Chambers Trial Chambers
647, -199
676 blocks
Igloo Igloo
88, 680
685 blocks
Ocean Ruin Ocean Ruin
328, -616
697 blocks
Ocean Ruin Ocean Ruin
-504, 488
701 blocks
Shipwreck Shipwreck
552, -456
715 blocks
Ocean Ruin Ocean Ruin
712, 104
719 blocks
Shipwreck Shipwreck
664, -280
720 blocks
Shipwreck Shipwreck
-744, -216
774 blocks
Shipwreck Shipwreck
-632, 456
779 blocks
Ruined Portal Ruined Portal
-584, -520
781 blocks
Ocean Ruin Ocean Ruin
72, -792
795 blocks
Shipwreck Shipwreck
-488, -632
798 blocks
Ocean Ruin Ocean Ruin
-136, -792
803 blocks
Ocean Ruin Ocean Ruin
-616, -520
806 blocks
Ocean Monument Ocean Monument
-776, -232
809 blocks
Ocean Ruin Ocean Ruin
-504, 648
820 blocks
Shipwreck Shipwreck
-312, -760
821 blocks
Buried Treasure Buried Treasure
665, -487
824 blocks
Ruined Portal Ruined Portal
248, 792
829 blocks
Trial Chambers Trial Chambers
-791, 313
850 blocks
Trial Chambers Trial Chambers
217, 825
853 blocks
Ocean Ruin Ocean Ruin
808, -296
860 blocks
Pillager Outpost Pillager Outpost
568, 664
873 blocks
Ocean Ruin Ocean Ruin
-840, -264
880 blocks
Ocean Monument Ocean Monument
264, -872
911 blocks
Ruined Portal Ruined Portal
872, 264
911 blocks
Ocean Ruin Ocean Ruin
-904, 136
914 blocks
Ruined Portal Ruined Portal
-504, 792
938 blocks
Trial Chambers Trial Chambers
71, -951
953 blocks
Ocean Ruin Ocean Ruin
-520, -808
960 blocks
Shipwreck Shipwreck
-72, -968
970 blocks
Trial Chambers Trial Chambers
695, 681
973 blocks
Ruined Portal Ruined Portal
120, -968
975 blocks
Trial Chambers Trial Chambers
-471, 855
976 blocks
Ocean Ruin Ocean Ruin
-872, 488
999 blocks
Ruined Portal Ruined Portal
936, -392
1014 blocks
Buried Treasure Buried Treasure
-967, 313
1016 blocks
Shipwreck Shipwreck
-568, -856
1027 blocks
Shipwreck Shipwreck
184, -1016
1032 blocks
Ocean Ruin Ocean Ruin
408, -952
1035 blocks
Ocean Ruin Ocean Ruin
1016, -200
1035 blocks
Shipwreck Shipwreck
-680, 792
1043 blocks
Ocean Ruin Ocean Ruin
-296, 1016
1058 blocks
Trial Chambers Trial Chambers
-985, -393
1060 blocks
Shipwreck Shipwreck
-968, 440
1063 blocks
Ocean Ruin Ocean Ruin
-888, -632
1089 blocks
Trial Chambers Trial Chambers
-281, -1063
1099 blocks
Pillager Outpost Pillager Outpost
152, 1096
1106 blocks
Ruined Portal Ruined Portal
648, 952
1151 blocks
Trial Chambers Trial Chambers
-839, 791
1153 blocks
Shipwreck Shipwreck
-840, 792
1154 blocks
Ruined Portal Ruined Portal
-1080, -408
1154 blocks
Ocean Ruin Ocean Ruin
24, -1160
1160 blocks
Ocean Ruin Ocean Ruin
-280, -1128
1162 blocks
Ruined Portal Ruined Portal
-1144, 216
1164 blocks
Trial Chambers Trial Chambers
1129, -329
1175 blocks
Trial Chambers Trial Chambers
-231, 1161
1183 blocks
Buried Treasure Buried Treasure
697, -983
1205 blocks
Shipwreck Shipwreck
-1016, -712
1240 blocks
Shipwreck Shipwreck
264, 1240
1267 blocks
Shipwreck Shipwreck
648, -1096
1273 blocks
Trial Chambers Trial Chambers
841, -967
1281 blocks
Buried Treasure Buried Treasure
-919, -903
1288 blocks
Buried Treasure Buried Treasure
-919, -919
1299 blocks
Shipwreck Shipwreck
1240, 440
1315 blocks
Trial Chambers Trial Chambers
-809, -1063
1335 blocks
Ocean Monument Ocean Monument
-760, 1112
1346 blocks
Shipwreck Shipwreck
1352, 104
1355 blocks
Trial Chambers Trial Chambers
1335, 263
1360 blocks
Trial Chambers Trial Chambers
-265, -1337
1363 blocks
Trial Chambers Trial Chambers
345, -1321
1365 blocks
Trial Chambers Trial Chambers
313, 1351
1386 blocks
Shipwreck Shipwreck
600, -1256
1391 blocks
Shipwreck Shipwreck
-360, 1352
1399 blocks
Ancient City Ancient City
1160, 792
1404 blocks
Ruined Portal Ruined Portal
-600, -1272
1406 blocks
Shipwreck Shipwreck
-280, -1384
1412 blocks
Ruined Portal Ruined Portal
856, -1128
1416 blocks
Shipwreck Shipwreck
120, -1416
1421 blocks
Ruined Portal Ruined Portal
1400, -280
1427 blocks
Trial Chambers Trial Chambers
-1417, 201
1431 blocks
Village Village
1128, -936
1465 blocks
Ruined Portal Ruined Portal
1416, 392
1469 blocks
Ruined Portal Ruined Portal
-1272, 744
1473 blocks
Trial Chambers Trial Chambers
-1417, -457
1488 blocks
Trial Chambers Trial Chambers
665, 1335
1491 blocks
Ruined Portal Ruined Portal
24, 1496
1496 blocks
Ocean Monument Ocean Monument
-1352, 1256
1845 blocks
Ocean Monument Ocean Monument
-1992, 216
2003 blocks
Ocean Monument Ocean Monument
-1304, 1816
2235 blocks
Ancient City Ancient City
-2280, 216
2290 blocks
Ancient City Ancient City
-2248, 456
2293 blocks
Ocean Monument Ocean Monument
136, -2440
2443 blocks
Ocean Monument Ocean Monument
-1752, 1736
2466 blocks
Ancient City Ancient City
-2264, 1384
2653 blocks
Ancient City Ancient City
-2152, 1640
2705 blocks
Ancient City Ancient City
-2680, 392
2708 blocks
Ancient City Ancient City
-2888, 552
2940 blocks
Ocean Monument Ocean Monument
248, -2952
2962 blocks
Ancient City Ancient City
-2584, -1480
2977 blocks
Ancient City Ancient City
-2984, 56
2984 blocks

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