Mushroom island and ocean monument

Java Edition 26.3. Checked with Seeder's engine on .

The island keeps you safe, and the monument next door gives you a big farm project to work on. Once you've cleared it, prismarine and tons of XP.

These are seeds where the island and the monument are close to each other, a reasonable swim from spawn.

  1. Overworld biome map of seed 9141707267233856 around spawn, with the monument and mushroom fields marked

    1 From spawn: an ocean monument 287 blocks north-west and a mushroom island 223 blocks north-west.

    Seed9141707267233856

    WhatX, ZDistance
    Monument240, 240287 blocks
    Mushroom Fields146, 418223 blocks
    Shipwreck208, 384187 blocks
    Ruined PortalOcean portal160, 384226 blocks
    Trial Chamber576, 544228 blocks
    Ancient City432, 896400 blocks
    Stronghold404, 15401.0k blocks

    Spawn in a dark forest at 352, 504, around Y 73.

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  2. Overworld biome map of seed 38756481678573377 around spawn, with the monument and mushroom fields marked

    2 From spawn: an ocean monument 129 blocks north-west and a mushroom island 310 blocks west.

    Seed38756481678573377

    WhatX, ZDistance
    Monument96, -144129 blocks
    Mushroom Fields-98, -130310 blocks
    Ruined PortalOcean portal80, 16160 blocks
    Trial Chamber0, 0223 blocks
    Shipwreck96, -352294 blocks
    Stronghold1348, -4761.2k blocks

    Spawn in a desert at 208, -80, around Y 66.

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  3. Overworld biome map of seed 9491458190862961 around spawn, with the monument and mushroom fields marked

    3 From spawn: an ocean monument 129 blocks north-east and a mushroom island 263 blocks north-east.

    Seed9491458190862961

    WhatX, ZDistance
    Monument-768, 192129 blocks
    Mushroom Fields-674, 94263 blocks
    Trial Chamber-848, 32023 blocks
    Ruined Portal-944, 208148 blocks
    Abandoned Camp-976, 224165 blocks
    Shipwreck-544, 240295 blocks
    Stronghold-2060, -13242.0k blocks

    Spawn in a birch forest at -832, 304, around Y 72.

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  4. Overworld biome map of seed 17036737413726777 around spawn, with the monument and mushroom fields marked

    4 From spawn: an ocean monument 304 blocks east and a mushroom island 305 blocks north-east.

    Seed17036737413726777

    WhatX, ZDistance
    Monument-208, 240304 blocks
    Mushroom Fields-326, -2305 blocks
    Trail Ruin-720, 192213 blocks
    Ruined PortalOcean portal-288, 304233 blocks
    Trial Chamber-224, 144304 blocks
    Abandoned Camp-752, 32318 blocks
    Jungle Pyramid-784, 528396 blocks
    Stronghold-1548, 4521.1k blocks

    Spawn in a jungle at -512, 240, around Y 66.

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  5. Overworld biome map of seed 16669324208218993 around spawn, with the monument and mushroom fields marked

    5 From spawn: an ocean monument 260 blocks north-east and a mushroom island 311 blocks east.

    Seed16669324208218993

    WhatX, ZDistance
    Monument-336, -208260 blocks
    Mushroom Fields-218, -10311 blocks
    Ruined PortalUndergroundAir pocket-624, 64136 blocks
    Shipwreck-288, 32248 blocks
    Trial Chamber-240, 208375 blocks
    Stronghold-1372, -476954 blocks

    Spawn in a plains at -528, -32, around Y 66.

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  6. Overworld biome map of seed 876019281330649 around spawn, with the monument and mushroom fields marked

    6 From spawn: an ocean monument 445 blocks north-west and a mushroom island 353 blocks north.

    Seed876019281330649

    WhatX, ZDistance
    Monument-192, 224445 blocks
    Mushroom Fields122, 226353 blocks
    VillageZombie villageSnowy village48, 62458 blocks
    IglooWith basement48, 65686 blocks
    Ruined Portal0, 688138 blocks
    Trial Chamber336, 560256 blocks
    Stronghold-540, 15241.1k blocks

    Spawn in a forest at 80, 576, around Y 64.

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  7. Overworld biome map of seed 29091098865339477 around spawn, with the monument and mushroom fields marked

    7 From spawn: an ocean monument 202 blocks west and a mushroom island 366 blocks south-west.

    Seed29091098865339477

    WhatX, ZDistance
    Monument-144, 96202 blocks
    Mushroom Fields-226, 274366 blocks
    Trial Chamber96, 288260 blocks
    ShipwreckBeached192, 304308 blocks
    Abandoned Camp240, 304333 blocks
    Ruined PortalOcean portal128, -304345 blocks
    Stronghold1460, 18282.3k blocks

    Spawn in a snowy taiga at 48, 32, around Y 65.

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  8. Overworld biome map of seed 3721475279528813 around spawn, with the monument and mushroom fields marked

    8 From spawn: an ocean monument 129 blocks west and a mushroom island 307 blocks south-west.

    Seed3721475279528813

    WhatX, ZDistance
    Monument288, -400129 blocks
    Mushroom Fields158, -218307 blocks
    Trial Chamber560, -256193 blocks
    Shipwreck480, -176218 blocks
    Ruined PortalOcean portal208, -288229 blocks
    Stronghold-1324, -4921.7k blocks

    Spawn in a beach at 416, -384, around Y 66.

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  9. Overworld biome map of seed 7225203405476503 around spawn, with the monument and mushroom fields marked

    9 From spawn: an ocean monument 500 blocks west and a mushroom island 263 blocks north-west.

    Seed7225203405476503

    WhatX, ZDistance
    Monument-160, 288500 blocks
    Mushroom Fields154, 162263 blocks
    Shipwreck512, 192238 blocks
    Abandoned Camp272, 624279 blocks
    Trail Ruin144, 576295 blocks
    Ruined Portal112, 128317 blocks
    Trial Chamber256, 16345 blocks
    IglooWith basement544, 672382 blocks
    Stronghold1476, 5801.2k blocks

    Spawn in a taiga at 336, 352, around Y 72.

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  10. Overworld biome map of seed 41006135150685160 around spawn, with the monument and mushroom fields marked

    10 From spawn: an ocean monument 362 blocks north-west and a mushroom island 396 blocks north-east.

    Seed41006135150685160

    WhatX, ZDistance
    Monument-304, -176362 blocks
    Mushroom Fields282, -138396 blocks
    VillageSavanna village-160, 112116 blocks
    Trial Chamber64, 32122 blocks
    Ruined PortalOcean portal144, 48195 blocks
    Shipwreck-96, -208292 blocks
    Abandoned Camp-384, 16342 blocks
    Stronghold-1484, 1641.4k blocks

    Spawn in a windswept savanna at -48, 80, around Y 66.

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Need more?

These ten seeds are the best out of thousands I searched. Seeder can find as many as you like, given the right premises, with your own range and in your favourite version.

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Good to know

  • Elder guardians give you Mining Fatigue from a distance, which you can deny by drinking milk.

Questions

What is an ocean monument?

A huge underwater temple guarded by guardians and three elder guardians, with gold blocks hidden inside. Minecraft Wiki

What do I need to raid it?

Water breathing, a helmet with Respiration, or plenty of doors to make air pockets, plus milk for the Mining Fatigue.