Ocean Monument

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Ocean monuments, also known as simply monuments, are rare underwater structures found in deep ocean biomes and variants. They are inhabited by guardians and elder guardians. They are the only place where sponges can be found and one of the two places where prismarine can be found; the other being ocean ruins.

Ocean monuments generate in areas with deep ocean biome variants everywhere within a 16 block square radius around the center point, and an aquatic biome (regular/deep/frozen ocean or regular/frozen river) everywhere within a 29 block square radius around the center point. In order to prevent air pockets, water generates around the monument as a part of the structure. The four blocks in the exact middle always generate each in a different chunk. It is the largest structure that does not contain a loot chest and the largest structure found underwater. An ocean monument can also overwrite other structures like strongholds during generation. A maximum of one ocean monument may generate in every 512×512 block area.

In Bedrock Edition, ocean monuments always generate at the same Y-level, with the top of the roof always at Y=56. Seafloor surrounding the monument is cut off if it is higher than the monument's base.

They can be located with ocean explorer maps, which are bought from apprentice-level cartographer villagers with emeralds.

The area of the ocean monument spawns only guardians after generating, also being the only location they spawn. Ocean monuments always contain three elder guardians – one at the top and one in each wing.

in Bedrock Edition, the particle of the elder guardian inflicting Mining Fatigue III is a separate entity, the elder guardian ghost.

The monument is constructed entirely from variants of prismarine and lit by sea lanterns. It includes a large central section flanked by two wings. Under the monument are 23 giant pillars that stretch to the ocean floor. The main entrance is located at the front of the central section. The base size of the structure is 58×58 blocks. Thus, the ocean monument (the location where guardians and elder guardians spawn) area is 3,364 square blocks.

The central section consists of various types of chambers. The chambers are randomly generated; each monument has a different number of rooms (at least six) arranged in a unique manner. Small random connections can generate inside by edges. The chambers connect vertically and horizontally to the different parts of the monument, including the left and right wings. At the topmost room resides an elder guardian. Around the center of the central section lies the treasure chamber, a tall room with eight blocks of gold encased in dark prismarine.

Occasionally, monuments contain one or more rooms with approximately 30 wet sponges on the ceiling. Sponge rooms have an opening only in the floor. Ocean monuments are not guaranteed to generate sponge rooms.

One of the wings contains a large room with a small pillar at the center. The room contains a second elder guardian. The other wing consists of a large open space with a large, square-shaped platform, containing another elder guardian. A long hallway that arcs around the wings and the back portion of the monument connects the two wings together.

Java Edition:

Bedrock Edition:

Java Edition:

Issues relating to "Ocean monument", "Water dungeon", or "Water temple" are maintained on the bug tracker. Issues should be reported and viewed there.

• 👁 A view of an ocean monument from above
  
  A view of an ocean monument from above
• 👁 A view of an ocean monument from a distance
  
  A view of an ocean monument from a distance
• 👁 The treasure chamber
  
  The treasure chamber
• 👁 The treasure (8 blocks of gold) uncovered
  
  The treasure (8 blocks of gold) uncovered
• 👁 The ocean monument generates with water around it, separate from the world generation
  
  The ocean monument generates with water around it, separate from the world generation
• 👁 An ocean monument that spawned in a lava ocean
  
  An ocean monument that spawned in a lava ocean
• 👁 An elder guardian spreading its spikes
  
  An elder guardian spreading its spikes
• 👁 An elder guardian found somewhere in the ocean monument
  
  An elder guardian found somewhere in the ocean monument
• 👁 A map of an ocean monument
  
  A map of an ocean monument
• 👁 An ocean monument in a deep-frozen ocean, below the ice in Bedrock Edition
  
  An ocean monument in a deep-frozen ocean, below the ice in Bedrock Edition
• 👁 An ocean monument that has generated underground in an amplified world
  
  An ocean monument that has generated underground in an amplified world
• 👁 An ocean monument truncated by overlapping pre-existing chunks during generation
  
  An ocean monument truncated by overlapping pre-existing chunks during generation
• 👁 An amethyst geode intersecting an ocean monument
  
  An amethyst geode intersecting an ocean monument
• 👁 An ocean monument from the inside, drained and with only the outer walls left
  
  An ocean monument from the inside, drained and with only the outer walls left
• 👁 The Ocean Monument Ahead seed template thumbnail
  
  The Ocean Monument Ahead seed template thumbnail

• 👁 A comparison between a desert pyramid, jungle pyramid, and an ocean monument
  
  A comparison between a desert pyramid, jungle pyramid, and an ocean monument
• 👁 An ocean monument in a customized world before 1.8.2
  
  An ocean monument in a customized world before 1.8.2
• 👁 An ocean monument in a customized world after 1.8.2
  
  An ocean monument in a customized world after 1.8.2
• 👁 Using sand to remove the water around an ocean monument
  
  Using sand to remove the water around an ocean monument
• 👁 An ocean monument in the distance at sunset
  
  An ocean monument in the distance at sunset
• 👁 An ocean monument below the surface
  
  An ocean monument below the surface
• 👁 Zuri leaving an ocean monument
  
  Zuri leaving an ocean monument

• 👁 The first released image of the ocean monument in development (ocean monuments do not have a room that resembles the one in the picture)
  
  The first released image of the ocean monument in development (ocean monuments do not have a room that resembles the one in the picture)
• 👁 Concept art seen in The World of Minecraft
  
  Concept art seen in The World of Minecraft

• 👁 Steve and Alex rowing to an ocean monument
  
  Steve and Alex rowing to an ocean monument
• 👁 An ocean monument as it appears in Trails & Tales Update: Official Launch Trailer
  
  An ocean monument as it appears in Trails & Tales Update: Official Launch Trailer
• 👁 Abyssal Monument, an ocean monument featured in Minecraft Dungeons
  
  Abyssal Monument, an ocean monument featured in Minecraft Dungeons
• 👁 A LEGO Minecraft ocean monument
  
  A LEGO Minecraft ocean monument
• 👁 A monument as it appears in Deep Dive!
  
  A monument as it appears in Deep Dive!

• Defeating an ocean monument
• Guardian farming

• "Building Blocks: Ocean Monument" by Duncan Geere – Minecraft.net, February 16, 2025.
• "Temples beneath the sea" by Marsh Davies – Minecraft.net, November 28, 2016.