OVERWORLD · OCEAN
Ocean Ruins
Broken stone or sandstone buildings, found alone or in clusters. Their chests and suspicious blocks hold treasure maps and pottery sherds, and warm ruins can hold sniffer eggs.
From the Minecraft Wiki, summarised
How it generates
Usually sits on the seabed or partly buried in it, though buildings can reach onto nearby shores. Height follows the terrain, and suspicious blocks can be hidden under ordinary sediment.
Biomes
- Ocean
- Deep Ocean
- Cold Ocean
- Deep Cold Ocean
- Frozen Ocean
- Deep Frozen Ocean
- Lukewarm Ocean
- Deep Lukewarm Ocean
- Warm Ocean
Placement values are for Java 26.3. Cold and warm ruins share one placement grid, and the biome decides which one you get. Cold ruins appear in normal, cold, and frozen oceans and their deep versions; warm ruins appear in warm, lukewarm, and deep lukewarm oceans. In Java, 30% of ruins are large, and 90% of large ruins bring a cluster of 4–8 smaller buildings. Drowned placed with the ruins don't despawn, and Java can also generate zombie nautilus jockeys. In both editions, each brushed block of suspicious sand in a warm ruin has a 1 in 15 chance of a sniffer egg. Java chests can hold stone spears; Bedrock's aren't confirmed to.
Variants
- Cold · Stone-brick ruins with suspicious gravel and Blade, Explorer, Mourner, and Plenty pottery sherds.
- Warm · Sandstone ruins with suspicious sand, sniffer eggs, and Angler, Shelter, and Snort pottery sherds.
- Small · Compact buildings using the small-ruin chest loot table.
- Large · Larger buildings using a separate chest loot table and usually accompanied by smaller ruins.
Notable loot
- Buried Treasure Map
- Sniffer Egg (warm suspicious sand)
- Blade, Explorer, Mourner, and Plenty pottery sherds (cold)
- Angler, Shelter, and Snort pottery sherds (warm)
- Enchanted book (large-ruin chest)
- Enchanted fishing rod
- Stone spear (Java chest loot)
- Copper, iron, golden, and diamond nautilus armor
Mobs
- Drowned
- Zombie Nautilus (Java jockey generation)
- Coral Zombie Nautilus (Java jockey generation in Warm Ocean)
History
- 1.13 (18w09a)Java
Introduced cold and warm underwater ruins.
- 1.13 (18w10a)Java
Added buried treasure maps to ruin chests.
- 1.13 (18w16a)Java
Added drowned during ruin generation.
- 1.4.0Bedrock
Introduced underwater ruins in the Update Aquatic.
- 1.16Java
Reduced the frequency of ocean ruins.
- 1.20 / 1.20.0Java and Bedrock
Added suspicious sand and gravel archaeology, including pottery sherds and warm-ruin sniffer eggs.
- 1.21.11Java
Added stone spears and nautilus armor to chests and fixed persistence of zombie nautiluses generated with ruins.
- 1.21.130Bedrock
Added copper, iron, golden, and diamond nautilus armor as possible ruin chest loot.
- 26.3Java
Added Warm Ocean Ruins Maps to abandoned camps and fixed ruin chests producing empty buried treasure maps.
- 26.50Bedrock
Added abandoned camp explorer maps that can lead to warm ocean ruins.
SeedLookout in-game verification
Seeds with this ocean ruins
None of our verified seeds has a ocean ruins yet. The facts above come from the Minecraft Wiki and have not been checked in game by us.
Sources
The description, generation rules, variants, loot, mobs and history above are summarised from the Minecraft Wiki article Ocean Ruins, retrieved 2026-09-30. Minecraft Wiki text is available under CC BY-NC-SA 3.0. We have not checked these facts in game.
Seed numbers, coordinates and screenshots come from SeedLookout's own in-game verification. About verified seeds
- https://wiki.ronlab.site/content/minecraftwiki_en_all_maxi_2025-11/Ocean_Ruins
- https://minecraft.wiki/w/Structure_set
- https://wiki.ronlab.site/content/minecraftwiki_en_all_maxi_2025-11/Structure_set
- https://theminecraftwiki.com/wiki/structure-set/
- https://raw.githubusercontent.com/misode/mcmeta/data/data/minecraft/worldgen/structure_set/ocean_ruins.json
- https://raw.githubusercontent.com/misode/mcmeta/26.3-data/data/minecraft/worldgen/structure_set/ocean_ruins.json
- https://raw.githubusercontent.com/misode/mcmeta/data/data/minecraft/loot_table/chests/underwater_ruin_big.json
- https://raw.githubusercontent.com/misode/mcmeta/26.3-data/data/minecraft/loot_table/chests/underwater_ruin_big.json
- https://raw.githubusercontent.com/misode/mcmeta/data/data/minecraft/loot_table/archaeology/ocean_ruin_warm.json
- https://minecraft.wiki/w/Java_Edition_1.20
- https://wiki.ronlab.site/content/minecraftwiki_en_all_maxi_2025-11/Sniffer_Egg
- https://wiki.ronlab.site/content/minecraftwiki_en_all_maxi_2025-11/Bedrock_Edition_1.21.130
- https://www.minecraft.net/en-us/article/minecraft-java-edition-1-21-11
- https://www.minecraft.net/en-us/article/minecraft-1-21-11-release-candidate-3
- https://www.minecraft.net/en-us/article/minecraft-1-21-130-bedrock-changelog
- https://www.minecraft.net/en-us/article/minecraft-26-3-snapshot-7
- https://www.minecraft.net/en-us/article/minecraft-java-edition-26-3
- https://www.minecraft.net/en-us/article/minecraft--bedrock-edition-26-50-changelog