Find the nearest monument
Java Edition · seed-accurate via cubiomes
The map opens on this seed in the Overworld, with ocean monument the only marker switched on.
Try these seeds
Documented Minecraft Java Edition seeds. Click to load — the finder reruns automatically.
- Java 1.13 panorama — "Update Aquatic" 1458140401 Mojang's launch panorama for the ocean overhaul. Coastal spawn — monuments are nearby in Deep Ocean.
- pack.png seed 3257840388504953787 Iconic Notch seed. Documented ocean monuments visible on modern Java world-gen.
- Beta 1.8 → 1.18 title panorama 2151901553968352745 Multi-biome historical seed with deep-ocean coverage suitable for monument hunting.
About Ocean Monument
What the structure is, and what it's worth the trip for
Ocean Monuments — the underwater fortresses guarded by Elder Guardians — are the only natural source of sponges, prismarine bricks, and the gold-block treasure room. Conduits also pair well with monuments: the recipe needs 8 Nautilus Shells + 1 Heart of the Sea (Heart from buried treasure), and the activating prismarine frame is built from monument-sourced blocks.
Monuments only generate in deep oceans — the finder validates the biome to ensure it's the real thing, not a candidate the game would skip.
How it works
The placement rules this finder reproduces
Monuments live on a 32-chunk region grid with deep-ocean biome validation. Cubiomes' getStructurePos picks the candidate; the biome check filters out non-deep-ocean candidates that the game would refuse to place.
Tips
Getting a useful result on the first search
- Drink Water Breathing + Night Vision potions before entering.
- Mining Fatigue is a per-monument debuff — kill all 3 Elder Guardians to clear it permanently.
- Sponges are in the small rooms behind prismarine bricks — bring a pickaxe and a furnace to dry them.
- The treasure chamber has 8 gold blocks (72 ingots) under a prismarine shell.
- Use the full seed map to find an island near the monument for a base camp.
Frequently asked questions
What people ask about finding this structure
How do I find an ocean monument? +
Ocean monuments generate in Deep Ocean biomes on a 32×32-chunk region grid. Enter your seed above — this finder runs the same biome-validated placement algorithm Mojang uses and returns the nearest monument's (x, z).
How far away is the nearest ocean monument from spawn? +
It depends on the seed. Default spawn rarely sits inside a Deep Ocean, so monuments typically land 500 to 4000 blocks out. Run the finder with From X / From Z at 0, 0 to see the exact distance for your world.
What biome do ocean monuments spawn in? +
Only Deep Ocean variants — Deep Ocean, Deep Cold Ocean, Deep Lukewarm Ocean, and Deep Frozen Ocean. Regular oceans, warm oceans, and frozen (shallow) oceans are excluded by the placement check.
Related on Crafty
The tools that pair with this one
More finders
The rest of the seed-based structure set