BETA

Some features are still being tested. This doesn't affect seeds that have been manually verified.

seedlookoutJAVA + BEDROCK

JAVA 26.3 · VERIFIED IN GAME

Two small mushroom islands between an ocean monument and a sunken shipwreck

Two low mushroom islands with giant red and brown mushrooms sit in open sea, with an ocean monument showing through the water to the north-north-west.

Mushroom fieldsOcean monumentIslandShipwreckOceanTrial chambers
Two low mushroom islands with giant red and brown mushrooms in open blue sea
The two mushroom islands, looking east.From -288, 98, -10, facing east

About this world

This seed has two small mushroom islands side by side around -218, 63, -10, split by a narrow channel. Both are low mycelium ground with giant red and brown mushrooms on top, and open ocean all around. The outline of an ocean monument shows through the water about 230 blocks north-north-west, at -336, 63, -208, with grassy islands on the horizon.

A shipwreck lies on the sea floor about 80 blocks west-south-west of the islands at -288, 63, 32; it shows as a dark shape under the water. The trial chambers are underground at -240, -29, 208, about 180 blocks south of the wreck. 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 clearly through open water. The mushroom islands stand on the horizon to the south-east.Ocean monument found at these coordinates-33663-208
Mushroom fieldsTwo low mycelium islands with giant red and brown mushrooms, split by a narrow channel of shallow water.Mushroom fields biome found at these coordinates-21863-10
ShipwreckA dark wreck shape on the sea floor in open water, with the mushroom islands to the east.Shipwreck found 12 blocks away-2886332
Trial chambersTuff brick and copper rooms with copper bulbs and oxidized copper floors, cut open by deepslate caves with lava.Trial chambers found at these coordinates-240-29208

Screenshots

Mycelium slopes with giant red and brown mushrooms, a second island across the channel
Giant mushrooms on the islands at -218, 63, -10.From -218, 98, -80, facing south
Ocean monument outline under clear water, a mushroom island on the horizon
The ocean monument at -336, 63, -208.From -336, 98, -278, facing south
Top-down view of the square ocean monument under open water
The monument from above.From -336, 153, -208, looking straight down
Dark shipwreck shape under the water, with two mushroom islands behind
The sunken shipwreck at -288, 63, 32.From -358, 98, 32, facing east
Tuff brick room with copper bands and an oxidized copper floor, a deepslate cave opening beside it
Inside the trial chambers at -240, -29, 208, a cutaway view.From -239, -27, 207, facing east

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 16669324208218993.
  2. Set Game Mode to Creative or turn Allow Cheats on, and press F3 to show your coordinates.
  3. Run /tp @s -218 100 -10 to arrive above the mushroom islands.
  4. For the ocean monument, run /tp @s -336 100 -208. For the shipwreck, run /tp @s -288 100 32 and dive to the sea floor.
  5. The trial chambers are underground at -240, -29, 208. Run /tp @s -240 -29 208, and bring torches or night vision in survival.

Questions

How far is the ocean monument from the mushroom islands on seed 16669324208218993?

About 230 blocks north-north-west. The monument is at -336, 63, -208 and the mushroom fields point is at -218, 63, -10.

Can I see the shipwreck from the surface?

Yes, as a dark shape on the sea floor near -288, 63, 32. The wreck sits between y 38 and 46, so you need to dive about 20 blocks to reach it.

Where are the trial chambers?

Underground at -240, -29, 208, about 180 blocks south of the shipwreck. They span y -50 to 3.

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
All Java 26.3 seedsRandom seed