How do you find a ocean monument in Minecraft?

Generates in deep ocean biomes (deep, deep frozen, deep cold, deep lukewarm; deep warm in Bedrock) Buy an ocean explorer map from an apprentice-level cartographer, for emeralds /locate structure minecraft:monument

What loot is in a ocean monument?

Block of gold in the treasure chamber; Wet sponges, from sponge rooms (about 30 on the ceiling; not every monument has one) - monuments are the only place sponges are found; Prismarine, dark prismarine and sea lanterns from the structure itself.

Ocean Monument

Overworld

How to find it

Generates in deep ocean biomes (deep, deep frozen, deep cold, deep lukewarm; deep warm in Bedrock)
Buy an ocean explorer map from an apprentice-level cartographer, for emeralds
/locate structure minecraft:monument

Loot

Block of gold in the treasure chamber
Wet sponges, from sponge rooms (about 30 on the ceiling; not every monument has one) - monuments are the only place sponges are found
Prismarine, dark prismarine and sea lanterns from the structure itself

Dangers

Guardians spawn only in the monument area
Always three elder guardians: one at the top and one in each wing; they inflict Mining Fatigue III

Tips

Kill the elders first, then mine.
The monument has at least six chambers and 23 pillars down to the seafloor. In Bedrock the roof is always at Y=56. Source: minecraft.wiki Ocean Monument.

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