View source for Ocean Monument

{{Structure
| image=Ocean Monument.png
| imagesize= 200px
| biome = {{BiomeLink|Deep Ocean}}<br>{{BiomeLink|Deep Frozen Ocean}}<br>{{BiomeLink|Deep Cold Ocean}}<br>{{BiomeLink|Deep Lukewarm Ocean}}
| blocks = 
* {{BlockLink|Block of Gold}}
* {{BlockLink|Dark Prismarine}}
* {{BlockLink|Kelp}}
* {{BlockLink|Kelp Plant}}
* {{BlockLink|Prismarine}}
* {{BlockLink|Prismarine Bricks}}
* {{BlockLink|Sea Lantern}}
* {{BlockLink|Seagrass}}
* {{BlockLink|Tall Seagrass}}
* {{BlockLink|Water}}
* {{BlockLink|Wet Sponge}}
* {{EntityLink|Guardian}}
* {{EntityLink|Elder Guardian}}
| canspawn = Yes, in chunks inhabited less than 3 minutes
}}
'''Ocean monuments''', also known as simply '''monuments''', are rare underwater [[generated structures|structures]] found in [[deep ocean]] [[biome]]s and variants. They are inhabited by [[guardian]]s and [[elder guardian]]s. They are the only place where [[sponge]]s can be found and one of the two places where [[prismarine]] can be found; the other being [[ocean ruins]].

== Generation ==
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, 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. It is the largest structure that does not contain a loot [[chest]] and the largest water structure. An ocean monument can also overwrite other structures like [[stronghold]]s during generation.

They can be located with ocean [[explorer map]]s, which are bought from cartographer [[villager]]s with [[emerald]]s.

Ocean monuments may also generate in existing [[chunk]]s with an {{cd|InhabitedTime}} (i.e. the amount of time players have been in the chunk) of less than 3 minutes. They generate in locations that they would have generated in the current version of ''Minecraft'', regardless of what terrain was originally there,<ref>{{bug|MC-239870||Large gap around Ocean Monuments if spawned in the area where old and new chunks smooth out}}</ref> meaning they may generate inside large square pools of water surrounded by land, causing the terrain to be harshly cut off.<ref>{{bug|MC-237145||Ocean monuments can cause nearby terrain to be harshly cut off}}</ref>

=== Mobs ===
{| style="text-align:center"
|-
| scope="col" style="width:70px" | [[File:GuardianFace.png|link=Guardian]]
| scope="col" style="width:70px" | [[File:ElderGuardianFace.png|link=Elder Guardian]]
|-
| style="vertical-align:top" | [[Guardian]]
| style="vertical-align:top" | [[Elder Guardian]]
|}

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, ocean monuments always generate at the same Y level, with the top of the roof always being at Y=56. The seafloor surrounding the monument will be cut off should it be higher than the monument's base.

== Structure ==
{{main|Ocean Monument/Structure}}

[[File:Sponge and treasure.png|thumb|right|The treasure chamber with a sponge room (smaller dark prismarine room) to its left.]]

The monument is constructed entirely from variants of [[prismarine]] and lit by [[sea lantern]]s. 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 [[guardian]]s and [[elder guardian]]s spawn) area is 3,364 square blocks.

[[File:MonumentOcean3.png|thumb|left|Certain rooms in the monument contain wet sponges.]]

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. 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 [[gold block]]s encased in [[dark prismarine]].

Occasionally, monuments contain one or more rooms with approximately 30 [[wet sponge]]s on the ceiling. Sponge rooms have an opening only in the floor. Not all monuments 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.

== Achievements ==
{{load achievements|The Deep End; Treasure Hunter}}

== History ==
{{History|java}}
{{History||1.8|snap=14w25a|Added ocean monuments.<ref>{{tweet|jeb_|479631410316447744|@WTheFranck Sure, but the ocean monument took me over two weeks to make... I need better tools :)|June 19, 2014}}</ref>}}
{{History||1.8.2|snap=pre7|Ocean monuments now generate correctly in [[Old Customized|customized]] worlds.<ref>{{bug|MC-57691}}, {{bug|MC-67150}}</ref>}}
{{History||1.9|snap=15w46a|Ocean monuments now require a larger area of deep ocean at the center to generate.}}
{{History||1.11|snap=16w39a|Added ocean [[explorer map]]s, which guide players to ocean monuments.}}

{{History|pocket alpha}}
{{History||v0.16.0|snap=build 1|Added ocean monuments.}}
{{History|pocket}}
{{History||1.1.0|snap=alpha 1.1.0.0|Added ocean [[explorer map]]s, which guide players to ocean monuments.}}
{{History|bedrock}}
{{History||1.4.0|snap=beta 1.2.20.1|Ocean monuments can now generate in frozen deep oceans, lukewarm deep oceans, and cold deep oceans.}}

{{History|console}}
{{History||xbox=TU31|xbone=CU19|ps=1.22|wiiu=Patch 3|switch=1.0.1|Added ocean monuments.}}
{{History||xbox=TU54|xbone=CU44|ps=1.52|wiiu=Patch 24|switch=1.0.4|Improved spawn chances of ocean monuments.}}
{{History|new3ds}}
{{History||1.3.12|Added ocean monuments.}}
{{History|foot}}

== Issues ==
{{issue list|Ocean monument|Water dungeon|Water temple}}

== Gallery ==
=== Screenshots ===
<gallery>
DesertTemple JungeTemple OceanMonument.png|A comparison between a [[desert temple]], [[jungle temple]] and an ocean monument.
MonumentOcean1.png|A view of a monument from above.
Monument Shadow.png|A view of a monument from a distance.
MonumentOcean2.png|The treasure chamber.
OceanMonument GoldBlocks.png|The treasure (8 gold blocks) uncovered.
Ocean Monument with water.png|The monument generates with water around it, separate from the world generation.
LavaOceanMonument.png|An ocean monument that spawned in a lava ocean.
Elder Guardian In Monument.png|An [[elder guardian]] spreading its spikes.
Liveguardian.png|An [[elder guardian]] found somewhere in the monument.
MonumentMapLarge.png|Map of an Ocean monument.
Ice Monument.png|A monument in a deep-frozen ocean, below the ice.
Underground ocean monument.png|Ocean monument that is generated underground in an amplified world.
Ocean monument odd generation.png|Monument truncated by overlapping pre-existing chunks during generation.
Custom World Monument 1.png|An ocean monument in a customized world before 1.8.2.
Custom World Monument 2.png|An ocean monument in a customized world after 1.8.2.
Monument Water Removal.jpg|Using sand to remove the water around an ocean monument.
Monument Sunset.jpg|An ocean monument in the distance at sunset.
</gallery>

=== Development images ===
<gallery>
JE 1.8 Dev Ocean monument.jpg|The first released image of the ocean monument in development (note that ocean monuments do not have a room that resembles the one in the picture).
</gallery>

== See also ==
* [[Tutorials/Defeating an ocean monument|Defeating an ocean monument]]
* [[Tutorials/Guardian farming|Guardian farming]]

== References ==
{{reflist}}

{{Generated structures}}

[[de:Ozeanmonument]]
[[es:Monumento oceánico]]
[[fr:Monument sous-marin]]
[[ja:海底神殿]]
[[ko:해저 유적]]
[[pl:Podwodna świątynia]]
[[pt:Monumento oceânico]]
[[ru:Подводная крепость]]
[[zh:海底神殿]]