JAVA 26.3 · VERIFIED IN GAME

Small mushroom island with a shipwreck and an ocean monument

Page updated October 4, 2026

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

Ocean monument

Shipwreck

Trial chambers

Mushroom fields

Island

Ocean

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.

Biome map

Open the Java 26.3 seed map

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Drag to pan, scroll or pinch to zoom. Select a marker to find it in the list.

The seed map shows this world’s biomes and predicted structures with its Java 26.3 model. Its markers are predictions, like the spawn facts. Only the Coordinates table was checked in game.

Seed

-8531640712777030001

Create a Java 26.3 world and enter this number exactly, including any minus sign. A seed recreates generated terrain, not player builds.

Coordinates

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

Location	X	Y	Z
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	-26	63	82
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	-96	63	240
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 coordinates	96	-31	272
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	-288	63	64

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.

How to get there

In Java Edition 26.3, choose Create New World, open the World tab and enter seed -8531640712777030001, including the minus sign.
Set Game Mode to Creative or turn Allow Cheats on, and press F3 to show your coordinates.
Run /tp @s -26 98 82 to arrive above the mushroom island.
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.
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.

Verified in game

Verified in game in Minecraft Java 26.3 on 2026-09-29. We checked the listed locations and reviewed the in-game screenshots before publication. Verification covers the listed structures and biomes in that version only, not the world spawn, chest loot or other versions. About verified seeds

Spawn and nearest structures

Predicted with the seed map’s Java 26.3 model and not checked in game. Distances are measured from the estimated spawn.

Estimated spawn: X -16, Z 352
Surface height: About Y 66
Spawn biome: Dark Forest

Nearest structures

Structure	X	Z	From spawn
Shipwreck	-96	240	138 blocks
Trial chambers	96	272	138 blocks
Ruined portal	320	384	338 blocks
Ocean ruin	144	48	344 blocks
Buried treasure	313	217	356 blocks
Ocean monument	-288	64	396 blocks
Abandoned camp	192	784	479 blocks
Trail ruins	-896	1104	1,158 blocks
VillagePlains village	-320	-816	1,207 blocks
Witch hut	1056	1296	1,428 blocks
Ancient city	0	-1296	1,648 blocks
Jungle temple	-1792	-1680	2,699 blocks
IglooBasement	-3264	128	3,256 blocks
Pillager outpost	-1968	-2800	3,707 blocks
Woodland mansion	-432	4160	3,831 blocks
Desert pyramid	-2880	3168	4,017 blocks

Nearest strongholds

Stronghold	X	Z	From spawn
Ring 1	-924	1492	1,457 blocks
Ring 1	1604	-124	1,688 blocks
Ring 1	-1164	-1868	2,499 blocks

Surface biomes within 1,024 blocks

Forest 17%
Deep Ocean 17%
Deep Cold Ocean 14%
Ocean 10%
Swamp 9%
Cold Ocean 8%