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seedlookoutJAVA + BEDROCK

JAVA 26.3 · VERIFIED IN GAME

Small mushroom island with a shipwreck and an ocean monument

A small mycelium island covered in huge red and brown mushrooms, with an ocean monument and a sunken shipwreck in the sea around it.

Mushroom fieldsOcean monumentIslandShipwreckTrial chambersOcean
Ocean monument outline under seagrass in shallow water, a mushroom island and a forested shore on the horizon
The ocean monument with the mushroom island behind it.From -358, 98, 64, facing east

About this world

This mushroom island seed has a small mushroom fields island at -26, 63, 82, surrounded by ocean. The island is a low block of mycelium with huge red and brown mushrooms across its top and dirt cliffs a few blocks high. A forested shore with tall spruce trees and huge red mushrooms lies to the south across the water.

A shipwreck lies on the sea floor at -96, 63, 240, about 170 blocks south-southwest of the island and close to the forested shore. An ocean monument sits about 260 blocks west at -288, 63, 64, and trial chambers lie underground at 96, -31, 272, about 225 blocks southeast. Seeder lists this world on its Mushroom Fields page.

Coordinates

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

LocationXYZTeleport
Mushroom islandA small mycelium island with huge red and brown mushrooms on top, standing alone in deep blue ocean.Mushroom fields biome found at these coordinates-266382
ShipwreckThe wreck lies on the sea floor at y 46 to 54, about 11 blocks from the listed point, and shows only as a dark shape through the water.Shipwreck found 11 blocks away-9663240
Trial chambersTuff brick halls with copper blocks, copper bulbs and oxidized copper floors, next to a lush cave. The structure spans y -52 to -6.Trial chambers found at these coordinates96-31272
Ocean monumentThe monument's stepped prismarine outline shows through seagrass below the surface, with the mushroom island in view to the east.Ocean monument found at these coordinates-2886364

Screenshots

Mycelium island with huge red and brown mushrooms and dirt cliffs, open ocean and a wooded coast to the left
The mushroom island at -26, 63, 82.From 44, 98, 82, facing west
Small mushroom island with red mushroom caps alone in open blue ocean
The island from the south.From -26, 98, 152, facing north
Dark outline of a sunken shipwreck on the sea floor, the mushroom island on the horizon
The shipwreck shows as a dark shape on the sea floor.From -96, 98, 310, facing north
Cutaway of trial chambers with tuff brick walls, copper bulbs, oxidized copper floors and a lower level of rooms
Inside the trial chambers, a cutaway taken from inside the rock.From 95, -29, 273, 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 -8531640712777030001, including the minus sign.
  2. Set Game Mode to Creative or turn Allow Cheats on, and press F3 to show your coordinates.
  3. Run /tp @s -26 98 82 to arrive above the mushroom island.
  4. For the shipwreck, run /tp @s -96 95 240 and dive; the wreck is on the sea floor about 10 to 17 blocks down. For the ocean monument, run /tp @s -288 95 64.
  5. The trial chambers are underground at 96, -31, 272. Switch to spectator with /gamemode spectator and run /tp @s 96 -31 272, or dig down in survival with torches or night vision.

Questions

Do I need the minus sign in the seed?

Yes. Enter -8531640712777030001 exactly. Without the minus sign you get a different world.

How far is the ocean monument from the mushroom island?

About 260 blocks west. The monument is at -288, 63, 64 and the island at -26, 63, 82. From above the monument, the island is in view across the water.

Is the shipwreck visible from the surface?

Only faintly. It lies on the sea floor at y 46 to 54 near -96, 63, 240 and shows as a dark shape under the water. Dive down to reach it.

Does this mushroom island seed work on Bedrock?

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 2026-09-29, 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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