Ocean monuments are among the most rewarding structures in Minecraft — massive prismarine palaces guarded by Elder Guardians and regular Guardians lurking in the deep. They are the only source of sponges, prismarine blocks, and sea lanterns, and the foundation of the best guardian XP farms in the game. Finding a world with a monument close to spawn removes hours of ocean navigation and lets you focus on the raid itself.
The seeds in this list were selected specifically for monument accessibility. Each one was verified in MC Seed View against cubiomes-generated structure positions. Whether you want a monument under a village, poking through ice in a frozen ocean, or sitting within swimming distance of a survival island, there is a seed here for your playstyle.
📐 See our Methodology page for the complete verification process, editorial standards, and update cadence.
What Makes a Great Ocean Monument Seed
Not every ocean monument seed is worth playing. The best ones combine proximity, terrain, and nearby structures into a complete package. Here are the criteria used to evaluate every seed in this list:
| Criterion | What to Look For |
|---|---|
| Distance from Spawn | Swimming long distances is slow; monuments within 800 blocks of spawn save significant time |
| Elder Guardian Count | All monuments have 3 Elder Guardians; seeds with multiple monuments let you farm more efficiently |
| Nearby Land Structures | Villages for supplies, strongholds for End progression — a monument paired with both is a complete world |
| Sponge Room Access | Sponge rooms provide the blocks needed to drain the monument; verify presence before committing |
Why Ocean Monument Seeds Matter
- Sponges — The only renewable way to drain large water areas; essential for underwater builds
- Prismarine — Beautiful building blocks in three varieties: prismarine, prismarine bricks, and dark prismarine
- Sea Lanterns — Elegant underwater light source blocks that outshine most alternatives
- Guardian Farms — Efficient XP and prismarine farms; a drained monument produces thousands of XP per hour
- Gold Blocks — 8 gold blocks (72 gold ingots) hidden in the monument's treasure room core
The 10 Best Seeds
1. Monument Under Village Beginner
A remarkable generation where a plains village generates on water with an ocean monument directly underneath at coordinates 60, 390. The village provides immediate access to beds, food, and trading while the monument below offers a built-in first raid target within view of your base. A large trial chamber with a mineshaft is nearby at -380, 120, giving you structured mid-game content progression without leaving the starting area. This is one of the most iconic monument seeds available in 1.21 and the top recommendation for players who want resource security alongside their first raid.
2. Monument in Lake at Spawn Beginner
Incredibly convenient: an ocean monument generates inside a lake right at your spawn point at coordinates 65, 56, 50. You do not need any ocean-diving equipment to reach the monument — it generates in a freshwater lake shallow enough to approach by foot. The absence of ocean depth makes early raids viable with minimal preparation compared to deep-sea monuments. This is the definitive seed for players who want to raid a monument as their very first Minecraft objective, since you can see the prismarine structure from the moment you spawn.
3. Frozen Monument Lake Intermediate
A frozen ocean monument where the top of the structure pokes through ice among icebergs — a visually stunning scene that feels unlike any other monument encounter. Surrounded by snowy taiga and ice spikes biomes, this seed delivers a unique arctic expedition atmosphere that rewards the additional preparation required. The frozen ocean biome means guardians are harder to spot through the ice and water, adding tension to an already challenging raid. Pack extra Water Breathing potions for this one — the cold adds no game mechanic penalty, but the visual complexity of navigating icy water makes extra supplies worth carrying.
4. Mountain-Surrounded Monument Intermediate
An ocean monument positioned close to land and encircled by mountains, creating one of the most farm-friendly setups in this list. The enclosed terrain channels water naturally, reducing the engineering required to build an efficient guardian farm drain. Players who intend to build a proper guardian XP farm will appreciate the mountains acting as natural walls that reduce the water surface area requiring management. The close land proximity means your storage and crafting infrastructure can sit just above water level, minimizing travel time between farm and base.
5. Roofed Forest + Lush Caves Monument Intermediate
Start in a Roofed Forest next to a hollow mountain filled with Lush Caves and abandoned mineshafts — an exceptional early-game resource combination that accelerates gear progression before you attempt the monument. The lush caves provide axolotls, which deal bonus damage to guardians and make early monument raids significantly safer. A submerged ocean monument at -296, -808 provides the underwater raid destination once you have assembled iron gear. The biome contrast between the dark roofed forest and the bright underwater monument makes this one of the most atmospheric seed combinations on this list.
6. Survival Island + Monument Advanced
A classic survival island seed with an ocean monument close enough to swim to from the starting island — a combination that creates one of the most satisfying challenge runs in Minecraft. The island provides just enough resources to prepare a basic raid kit if you are patient: grow trees for wood, fish for food, and craft the necessary potions before attempting the monument. Raiding a monument with only island-gathered resources is a genuine feat of survival planning. This seed rewards experienced players who understand monument mechanics and are comfortable managing Mining Fatigue before killing the Elder Guardians.
7. Tiny Island Near Monument Advanced
The ultimate challenge: spawn on a tiny island barely large enough for one tree, with an ocean monument visible in the water nearby alongside a shipwreck loaded with starter loot. The shipwreck is critical — it likely contains food, materials, and possibly a buried treasure map that can accelerate your gear progression on an otherwise resource-starved start. Managing Mining Fatigue with such limited early resources is the defining challenge of this seed; kill the Elder Guardians the moment you have any form of Water Breathing available. This is a seed for experienced players who want a structured extreme survival challenge with a clear first-priority objective.
8. Coral + Monument Combo Beginner
A mushroom island surrounded by coral reefs, with ocean monuments dotting the warm waters around it — a builder's paradise combining three of Minecraft's most colorful underwater aesthetics. The mushroom island provides the safest possible base: no hostile mob spawns on mycelium surfaces, making it an ideal safe haven between monument raids. Coral and prismarine create a rich, colorful underwater building palette that rewards players who want to construct elaborate undersea builds. Multiple monuments in the surrounding waters mean you can farm sponges and prismarine extensively without exhausting a single structure.
9. Jungle + Monument Explorer Beginner
Spawn in a jungle biome with a massive mushroom island and ocean monument in the surrounding waters — three entirely different biome experiences within reach of your first exploration session. The jungle provides bamboo, cocoa beans, and parrots alongside the typical jungle temple loot. The mushroom island acts as a safe staging ground between jungle exploration and monument raiding. Three distinct biome types create a diverse exploration experience that rarely runs short of new content regardless of how long you play the world.
10. Stronghold Village + Monument Beginner
A village above a stronghold at spawn provides excellent early-game and late-game infrastructure, while ocean monuments in the nearby ocean offer underwater adventure and prismarine resources. This seed gives you the three pillars of a complete Minecraft progression: a village for trading and supplies, a stronghold for End access, and a monument for sponge and XP farming. The proximity of all three major structures means you can pursue any objective at any point in the game without long travel commitments. This is the best all-around seed for players who want a complete vanilla progression experience.
🔱 Find Ocean Monument Seeds
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Open Ocean Monument Seeds →Ocean Monument Tips & Strategy
Ocean monuments require more preparation than most overworld structures. Here are the four most impactful techniques for a successful raid:
- Brew Potion of Water Breathing first. You need at least 3 minutes of Water Breathing for a basic raid — bring multiple potions or set up a conduit inside the monument. A single 8-minute Water Breathing potion (using redstone) is sufficient for killing all three Elder Guardians if you move efficiently. Do not attempt a monument without Water Breathing unless the lake variant makes it accessible from the surface.
- Defeat Elder Guardians early. Elder Guardians apply Mining Fatigue III the moment you enter the monument's bounding box — this nearly prevents you from breaking any blocks. Kill all three Elder Guardians as your first priority; their Mining Fatigue pulses stop permanently once all three are dead. Each Elder Guardian is found in one of the three monument wings and in the top chamber.
- Bring a conduit. Place a conduit in a 5×5 water area inside the monument for permanent Water Breathing and Night Vision within a 32–96 block radius. A conduit requires 16 nautilus shells and one Heart of the Sea — expensive but it transforms the monument from a timed challenge into a comfortable base of operations for draining and building.
- Use sponges from the monument to drain it. Sponge blocks absorb water but must be dried in the Nether to reuse them — place wet sponges in a Nether portal, let them dry, and bring them back. Bring 20 or more dry sponges for efficient draining of large sections. The monument's own sponge room provides the starting supply you need for this technique.
Common Mistakes to Avoid
- Entering without Water Breathing. Mining Fatigue III reduces block-breaking speed to near zero while drowning damage compounds the problem. Even in shallow lake variants, Elder Guardians still apply Mining Fatigue — bring Milk to cure it instantly, or kill all 3 Elders before attempting any block breaking.
- Fighting Guardian lasers head-on. Guardians target the nearest player with a tracking laser that deals increasing damage the longer it connects. Bringing a crowd divides their attention; alternatively, use a Potion of Invisibility to move through the monument undetected while you locate the Elder Guardians. A shield does not block Guardian lasers.
- Missing the treasure room. The treasure room is in the upper center section of the monument and contains 8 gold blocks arranged in a 2×2×2 cube — 72 gold ingots worth of material. Many first-time raiders explore only the lower wings and never find it. Look for the dark prismarine core at the highest point of the interior structure.
- Not building a guardian XP farm. A drained and converted ocean monument produces thousands of XP per hour and massive prismarine quantities. The setup investment — draining with sponges, building the kill chamber, and managing water flow — pays back within a single session of farming. Treating the monument as a one-time raid rather than a permanent farm is the most common missed opportunity with this structure.
Frequently Asked Questions
What is Mining Fatigue and how do I avoid it?
Mining Fatigue III is a status effect applied by Elder Guardians that slows block-breaking speed to approximately 0.003× normal — effectively preventing you from breaking any blocks. An Elder Guardian within the monument will periodically pulse this effect onto any player within its bounding box. The most reliable counter is to drink Milk, which removes all status effects instantly. The permanent solution is to kill all three Elder Guardians: once all three are dead, no new Mining Fatigue is applied, and the existing effect expires naturally within a few seconds.
How much gold is in an ocean monument?
The treasure room of every ocean monument contains exactly 8 gold blocks arranged in a 2×2×2 cube, equivalent to 72 gold ingots. The treasure room is located in the upper center portion of the monument, surrounded by dark prismarine. This is in addition to any gold found in the monument's structural elements. The treasure room is permanent and always present — unlike chests, it does not vary between seeds, though the room's exact position within the upper section can differ slightly in layout.
Can I drain an ocean monument?
Yes, and it is one of the most rewarding construction projects in the game. Draining a monument requires sponge blocks — obtained from the monument's own sponge room or by killing Elder Guardians (guaranteed drop). Wet sponges must be dried in the Nether before reuse. The complete process involves building a temporary wall around the monument, removing the water from the top down using sponges, and then filling any water source blocks that remain. A fully drained monument makes a superb base with unique prismarine architecture and unlimited indoor space.
Do guardians only spawn in ocean monuments?
Guardians spawn anywhere within the monument's bounding box in water, even if the monument structure itself has been removed or never generated. The bounding box extends roughly 58×23×58 blocks and is defined by the monument's position, not its physical blocks. This means a drained monument still spawns guardians in the empty space where water used to be — which is exactly what guardian farms exploit by funneling spawned mobs into a central kill chamber. You cannot stop guardian spawning by removing the structure alone.
What is the best way to get Sponge?
The two reliable sources are Elder Guardian drops (each Elder Guardian drops 1 wet sponge on death, guaranteed) and the sponge room inside the monument. Every ocean monument has at least one sponge room, and some have two — these rooms contain multiple wet sponges in the walls and floor. Dry sponges by placing them in the Nether (or using a furnace with any fuel) so they can absorb water again. For early monument access, kill the three Elder Guardians first for an immediate supply of 3 wet sponges before searching for the sponge room.
How to Find More on Any Seed
Use MC Seed View to find ocean monuments on any seed:
- Enter your seed on MC Seed View
- Enable the structure toggle in the Features panel
- Zoom out to see all locations on your map
- Click any icon for exact coordinates and /tp command