Minecraft:Warm Ocean Ruins

Template:Infobox structure Warm ocean ruins are variants of Minecraft:ocean ruins. They are underwater Minecraft:structures primarily composed of Minecraft:sandstone. They are found in Minecraft:ocean biomes and rarely on Minecraft:beaches, and are inhabited by Minecraft:drowned and sometimes Minecraft:zombie nautiluses alongside them. They contain Minecraft:chests and Minecraft:suspicious sand that contain a variety of Minecraft:loot, notably the buried Minecraft:treasure map and the Minecraft:sniffer egg.

Generation

Warm ocean ruins generate in warm, lukewarm, and deep lukewarm ocean biomes, and are composed of sandstone and stone materials as well as having some blocks of Minecraft:suspicious sand within them.

Ocean ruins may at times be at least partially buried, including with their airspaces. During generation, all air blocks and structure blocks act as structure voids. This means that their associated suspicious blocks are also located under layers of usual Minecraft:sand, Minecraft:gravel, and even stone. Suspicious sand and gravel randomly replace sand and gravel respectively during generation, and are not part of the Minecraft:structure definition.

Although most ocean ruins generate underwater, they sometimes generate on land, bordering a Minecraft:beach or another seaside Minecraft:biome.

30% of ocean ruins generate as large ocean ruins; the other 70% generate as small ruins. If the ocean ruin is large, there is a 90% chance for 4-8 (inclusive) small ocean ruins to generate around it in a cluster. If the ocean ruin is warm, large ocean ruins generate with a Minecraft:structure integrity of 0.9 and small ocean ruins generate with a structure integrity of 0.8.  Reduced structure integrity may also remove Minecraft:drowned and zombie nautiluses from the structures.

Structure

Template:Main The shape and size of warm ocean ruins varies greatly, and they often generate together in groups to create ruined villages.

All but two of the structures contain a loot Minecraft:chest with loot inside. The chest contains loot for specifically either a small or large sized ocean ruin structure and may be buried under blocks such as Minecraft:sand.

Warm ocean ruins are primarily composed of Minecraft:sand, Minecraft:sandstone, and Minecraft:suspicious sand, and they also contain Minecraft:polished granite, Minecraft:polished diorite, Minecraft:sea lanterns, Minecraft:magma blocks, Minecraft:gravel, Minecraft:terracotta, Minecraft:sandstone stairs, or a loot Minecraft:chest.

Natural warm ocean ruins generate following the rules above and may not exactly match the stored structures.

The structures below are located in the folder Minecraft:client.jar/data/minecraft/structures/underwater_ruin. The following is a complete table of the structures with their filenames, descriptions and what they consist of.

Each Template:BlockLink indicates either a chest with random loot or the spawn location of a drowned/zombie nautilus Minecraft:mob.

Mobs

File:DrownedFace.png	Template:Animate
Minecraft:Drowned	Minecraft:Zombie Nautilus

Upon world generation, many of the structures spawn with Minecraft:drowned (usually one or two, though a few structures have three or four). These drowned are persistent, and do not despawn. Adult drowned wielding tridents may also also spawn riding a Minecraft:zombie nautilus as a zombie nautilus jockey.

Zombie nautiluses spawned from ruins are also persistent and will even spawn on Minecraft:Peaceful difficulty, despite being Minecraft:monsters, as the mobs spawned from ocean ruins count as part of the structure and ignore conventional spawning mechanics, leaving the zombie nautilus spawning on Peaceful by itself.<ref>Template:Bug.</ref>

Types

Structure name	Description	Consists of	Images
underwater_ruin/big_warm_4	A chunk-sized structure featuring a large Minecraft:sandstone arch. 2 Drowned always generate here.	220 Template:BlockLink 152 Template:BlockLink 24 Template:BlockLink 18 Template:BlockLink 4 Template:BlockLink 3 Template:BlockLink 1 Template:BlockLink (random loot) 2 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Big Warm 4.png
underwater_ruin/big_warm_5	A chunk-sized structure with a tall tower in the center. It looks similar to a fountain. 4 Drowned always generate here.	222 Template:BlockLink 43 Template:BlockLink 12 Template:BlockLink 8 Template:BlockLink 5 Template:BlockLink 4 Template:BlockLink 2 Template:BlockLink 1 Template:BlockLink (random loot) 4 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Big Warm 5.png
underwater_ruin/big_warm_6	A chunk-sized structure featuring 4 sandstone arches. 2 Drowned always generate here.	219 Template:BlockLink 129 Template:BlockLink 4 Template:BlockLink 4 Template:BlockLink 2 Template:BlockLink 2 Template:BlockLink 1 Template:BlockLink (random loot) 2 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Big Warm 6.png
underwater_ruin/big_warm_7	A chunk-sized structure with an open sandstone dome. 2 Drowned always generate here.	202 Template:BlockLink 100 Template:BlockLink 24 Template:BlockLink 8 Template:BlockLink 4 Template:BlockLink 2 Template:BlockLink 2 Template:BlockLink 1 Template:BlockLink 1 Template:BlockLink (random loot) 2 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Big Warm 7.png
underwater_ruin/warm_1	A small structure with an open dome. Looks like a smaller version of big_warm_7.	75 Template:BlockLink 47 Template:BlockLink 7 Template:BlockLink 1 Template:BlockLink (random loot)	File:Ruin Warm 1.png
underwater_ruin/warm_2	A small hut with a large opening in the front. 2 Drowned always generate here.	42 Template:BlockLink 36 Template:BlockLink 2 Template:BlockLink 2 Template:BlockLink 1 Template:BlockLink (random loot) 2 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Warm 2.png
underwater_ruin/warm_3	A small hut that has an entrance on all sides. A Drowned always generates here.	36 Template:BlockLink 24 Template:BlockLink 13 Template:BlockLink 2 Template:BlockLink 1 Template:BlockLink (random loot) 1 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Warm 3.png
underwater_ruin/warm_4	A small structure featuring two small arches. A Drowned always generates here.	42 Template:BlockLink 28 Template:BlockLink 10 Template:BlockLink 2 Template:BlockLink 1 Template:BlockLink 1 Template:BlockLink (random loot) 1 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Warm 4.png
underwater_ruin/warm_5	A small structure that is essentially a roof with multiple supports. A Drowned always generates here.	37 Template:BlockLink 34 Template:BlockLink 1 Template:BlockLink (random loot) 1 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Warm 5.png
underwater_ruin/warm_6	A small hut that looks similar to the ruin5 series, although made of sand materials. It is filled with sand and the entrance is blocked off.	48 Template:BlockLink 39 Template:BlockLink 4 Template:BlockLink 1 Template:BlockLink 1 Template:BlockLink (random loot)	File:Ruin Warm 6.png
underwater_ruin/warm_7	A small structure that looks similar to the ruin2 series, although made of sand materials.	34 Template:BlockLink 6 Template:BlockLink 3 Template:BlockLink 1 Template:BlockLink (random loot)	File:Ruin Warm 7.png
underwater_ruin/warm_8	A thin wall with multiple "windows". Appears to be a miniature cross section of big_warm_4. A Drowned always generates here.	56 Template:BlockLink 19 Template:BlockLink 5 Template:BlockLink 4 Template:BlockLink 1 Template:BlockLink (random loot) 1 Template:EntityLink Template:EntityLink - Has a chance of spawning alongside a trident-wielding Drowned	File:Ruin Warm 8.png

Loot

Data values

Template:El: Template:ID table Template:ID table Template:ID table

Template:El: Template:ID table

History

File:Turtle first screenshot.jpg

The first official image of underwater ruins.

File:Turtle Structure.png

The same image, brightened for clarity.

Issues

Issues relating to "Ocean Ruins" are maintained on the Minecraft:bug tracker. Issues should be reported and viewed there.

Trivia

File:Land ruin.png

An ocean ruin Template:In that generated completely on land. The water block above it that has not been updated.

File:Land ruin Java.png

An ocean ruin Template:In that also generated completely on land. The loot chest is not waterlogged and does not have a water block on top of it.

• Template:IN, ocean ruins generate with approximately equal spacing in the X and Z directions.
• Template:IN, the loot chest of ocean ruins generates with a water block above it.<ref>Template:Bug</ref> This can be seen in the first image. Template:IN, this is not the case, according to the second picture.<ref>Template:Bug</ref>

Gallery

• A warm ocean ruins that generated with a coral reef.
  A warm ocean ruins that generated with a coral reef.
• A warm ocean ruins that generated with a Minecraft:fossil.
  A warm ocean ruins that generated with a Minecraft:fossil.
• Warm ocean ruins.
  Warm ocean ruins.
• Warm ocean ruins that generated with a desert village.
  Warm ocean ruins that generated with a desert village.
• Warm ocean ruins
  Warm ocean ruins
• Warm ocean ruins that generated in a lukewarm ocean.
  Warm ocean ruins that generated in a lukewarm ocean.

External Links

"Building Blocks: Ocean Ruins" by Minecraft:Duncan Geere – Minecraft:Minecraft.net, August 14, 2025.