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seedlookoutJAVA + BEDROCK

JAVA 26.3 · VERIFIED IN GAME

Long mushroom island near an ocean monument, with a sunken ruined portal and shipwreck

A long, low island of grey mycelium covered in giant red and brown mushrooms, in open ocean near a monument.

Mushroom fieldsOcean monumentIslandOceanShipwreckRuined portal
Grey mycelium island with giant red and brown mushrooms in blue ocean, a green forested coast behind
The mushroom island at 146, 63, 418, seen from the north.From 146, 98, 348, facing south

About this world

This seed puts a long, narrow mushroom island in open ocean at 146, 63, 418. Grey mycelium covers the island, dotted with giant red and brown mushrooms, and its edges drop straight into the water. A green forested coast lies to the south across the water.

An ocean monument sits at 240, 63, 240, about 200 blocks north-northeast of the island point. Its prismarine outline shows through the water from above. A shipwreck lies on the sea floor at 208, 63, 384, about 70 blocks east-northeast of the island point, and an ocean ruined portal is underwater at 160, 63, 384, just off the island's east shore. 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 monumentA prismarine monument on the sea floor, visible through the water from above. The mushroom island stands on the horizon to the south-southwest.Ocean monument found at these coordinates24063240
Mushroom fieldsA long, low island of grey mycelium covered in giant red and brown mushrooms, with steep dirt edges and open ocean around it.Mushroom fields biome found at these coordinates14663418
ShipwreckOn the sea floor between y 40 and 48, a few blocks from the listed point. From the surface only open water and the mushroom island show.Shipwreck found 3 blocks away20863384
Ocean ruined portalUnderwater off the east shore of the mushroom island, between y 39 and 46, about 12 blocks east of the listed point. It does not show from the surface.Ruined portal found 12 blocks away16063384

Screenshots

Low grey island covered in giant red and brown mushrooms, surrounded by open ocean
The island from the south.From 146, 98, 488, facing north
Prismarine ocean monument visible under blue water, a long mushroom island on the horizon
The ocean monument at 240, 63, 240, with the mushroom island behind.From 240, 98, 170, facing south
Top-down view of a square prismarine monument outline under deep blue water
The monument from above.From 240, 153, 240, looking straight down
Wide view of a small mushroom island with red caps in the middle of open ocean
The island alone in open sea.From 266, 143, 538, facing north-west

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 9141707267233856.
  2. Set Game Mode to Creative or turn Allow Cheats on, and press F3 to show your coordinates.
  3. Run /tp @s 146 98 418 to arrive above the mushroom island.
  4. For the ocean monument, run /tp @s 240 98 240 and look down through the water. The monument sits between y 39 and 61.
  5. The shipwreck and the ocean ruined portal are underwater. Run /tp @s 212 50 400 for the wreck or /tp @s 178 50 390 for the portal, and bring water breathing or night vision in survival.

Questions

How far is the ocean monument from the mushroom island?

About 200 blocks. The monument is at 240, 63, 240 and the mushroom island point is at 146, 63, 418, to the south-southwest.

Can you see the shipwreck and the ruined portal from the surface?

No. Both lie deep on the sea floor. The shipwreck is between y 40 and 48 around 208 to 216, 387 to 414, and the ocean portal is between y 39 and 46 around 172 to 183, 385 to 394.

What is on the mushroom island?

Grey mycelium ground with many giant red and brown mushrooms. The island is long and low, with steep dirt edges dropping into the ocean.

Does this seed work on Bedrock or other Java 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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