Deep Ocean biome

Deep Ocean

OverworldRainJava 26.3

The Deep Ocean biome (Overworld) has a temperature of 0.5 (Rain). 15 mob types spawn here — mostly Spider, Skeleton, Creeper, Slime at night and None by day — and it can generate Mineshaft, Ocean Monument, Ocean Ruins, Ruined Portal, Shipwreck, Stronghold, Trial Chambers. Spawn weights and ores below come from the Java 26.3 game files.

Temperature
0.5Rain
Mob types
15
Most common monster
Spider19.2%
Structures
7
Extra ore
Copper Ore

Mobs that spawn in the Deep Ocean

Game data

Every natural spawn with its weight. Within each group, a mob's share is its chance per spawn attempt.

Monsters

Monsters
MobWeightSharePack size
Spider10019.2%4
Skeleton10019.2%4
Creeper10019.2%4
Slime10019.2%4
Zombie9518.3%4
Enderman101.92%1–4
Zombie Villager50.96%1
Witch50.96%1
Drowned50.96%1

Ambient

Ambient
MobWeightSharePack size
Bat10100%8

Water animals

Water animals
MobWeightSharePack size
Nautilus571.4%1
Squid114.3%1–4
Dolphin114.3%1–2

Fish

Fish
MobWeightSharePack size
Cod10100%3–6

Underground water animals

Underground water animals
MobWeightSharePack size
Glow Squid10100%4–6

Monsters spawn in darkness (block light 0 in the Overworld); animals mostly when chunks generate and on grass in light.

Structures in the Deep Ocean

These structures can generate in this biome.

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Ores in the Deep Ocean

Ores that generate here, with the best Y level for each. Highlighted: extra ore only this kind of biome gets (Copper Ore).

Deep Ocean climate

Game data
Dimension
Overworld
Temperature
0.5
Downfall
0.5
Weather
Rain
Sky colour
#7ba4ff
Water colour
#3f76e4
Biome ID
minecraft:deep_ocean

Find it with /locate biome and the ID above.

Data: Minecraft Java Edition 26.3 game files. How we source this

The Deep Ocean is a biome (Overworld; temperature 0.5, Rain). Its most common monsters are Spider, Skeleton, Creeper, Slime; its animals are None. It can contain 7 structure types: Mineshaft, Ocean Monument, Ocean Ruins, Ruined Portal, Shipwreck, Stronghold, Trial Chambers. It also generates extra Copper Ore.

See Also

All Minecraft biomesMobsStructuresOres
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Deep Ocean FAQ (Java 26.3)

What mobs spawn in the Deep Ocean?

Monsters: Spider, Skeleton, Creeper, Slime. Animals: None. 15 mob types in total.

What structures are in the Deep Ocean?

Mineshaft, Ocean Monument, Ocean Ruins, Ruined Portal, Shipwreck, Stronghold, Trial Chambers.

Does it rain or snow in the Deep Ocean?

Its temperature is 0.5, so its weather is: Rain.

Does the Deep Ocean have extra ores?

Yes: it generates extra Copper Ore that most biomes don't get.