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seedlookoutJAVA + BEDROCK

JAVA 26.3 · VERIFIED IN GAME

Ruined portal on a mushroom island, with an ocean monument

A mushroom island of grey mycelium and giant red and brown mushrooms, with a ruined portal in a hollow on top.

Mushroom fieldsRuined portalOcean monumentIslandOceanTrial chambers
Mushroom island of grey mycelium with giant red and brown mushrooms in blue ocean, pale icy peaks behind
The mushroom island at 154, 63, 162.From 154, 98, 232, facing north

About this world

This seed has a mushroom island at 154, 63, 162: a raised mound of grey mycelium covered in giant red and brown mushrooms, with open blue ocean all around. A ruined portal sits in a hollow on the island at 112, 79, 128, marked by a patch of dark red netherrack. Across the water there are forested shores and a line of pale, icy peaks.

An ocean monument lies on the sea floor at -160, 63, 288, about 340 blocks west-southwest of the island; its outline shows through the water from above. The trial chambers are underground at 256, -27, 16, about 180 blocks northeast of the island. Seeder lists this world on its Monument / Mushroom Fields page.

Coordinates

Each structure and biome was found at or near these coordinates in Java 26.3.

LocationXYZTeleport
Ocean monumentThe monument's stepped outline shows through deep blue water from above, with forested shores and a mushroom island on the horizon.Ocean monument found at these coordinates-16063288
Mushroom fieldsA mushroom island of grey mycelium with giant red and brown mushrooms, ringed by steep dirt edges and open ocean.Mushroom fields biome found at these coordinates15463162
Ruined portalIn a hollow on the mushroom island, about 54 blocks northwest of the mushroom fields point. A patch of dark red netherrack and a few obsidian blocks mark it among the giant mushrooms.Ruined portal found 8 blocks away11279128
Trial chambersUnderground at y -27: tuff brick and copper rooms with green copper floors, beside a large cave with lava.Trial chambers found at these coordinates256-2716

Screenshots

Giant red and brown mushrooms on grey mycelium around a patch of red netherrack with a few obsidian blocks
The ruined portal in a hollow on the island.From 182, 114, 128, facing west
Giant mushrooms on the edge of the island, open sea and pale jagged peaks on the far horizon
Looking east across the island.From 84, 107, 162, facing east
Outline of an ocean monument under deep blue water, forested islands on the horizon
The ocean monument at -160, 63, 288.From -160, 98, 218, facing south
Trial chamber room of tuff brick and copper with a green copper floor, a cave and lava below
A cutaway view inside the trial chambers at y -27.From 255, -25, 17, facing south

Select a screenshot to open it at full size.

How to get there

  1. In Java Edition 26.3, choose Create New World, open the World tab and enter seed 7225203405476503.
  2. Set Game Mode to Creative or turn Allow Cheats on, and press F3 to show your coordinates.
  3. Run /tp @s 154 98 162 to arrive above the mushroom island. For the ruined portal on it, run /tp @s 112 115 128.
  4. For the ocean monument, run /tp @s -160 98 288 and look down into the water. It is underwater, so bring water breathing in survival.
  5. The trial chambers are underground at 256, -27, 16. Run /tp @s 256 -27 16, and bring torches or night vision in survival.

Questions

Is the ruined portal on the mushroom island?

Yes. It is at 112, 79, 128, in a hollow on the mushroom island, about 54 blocks northwest of the mushroom fields point at 154, 63, 162. Look for the patch of netherrack among the giant mushrooms.

How far is the ocean monument from the mushroom island?

About 340 blocks west-southwest. The monument is at -160, 63, 288 on the sea floor, and its outline shows through the water from above.

Where are the trial chambers?

Underground at 256, -27, 16, about 180 blocks northeast of the mushroom island.

Does this seed work on Bedrock or other versions?

We verified it only in Java 26.3. Bedrock and other Java versions may generate a different world from the same seed.

Verification

We verified this seed by hand in Java 26.3 on 2026-09-30, and the screenshots come from the game. Verification covers the listed structures and biomes in that version only, not the world spawn, chest loot or other versions. About verified seeds

Biome map

The seed map shows this world’s biomes and predicted structures with its Java 26.3 model. Its markers are predictions; the coordinates above are verified.

Open the Java 26.3 seed map
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