Tested 26.3
Iron Nautilus Armor: 5 armor points. Nautilus armor protects a tamed Nautilus, the mount you ride underwater.
It cannot be crafted; it can be found in chests.
What it does
Use the armor on your nautilus to put it on; Shears take it off again. Zombie nautiluses can wear it too. The armor shows on the mount and adds armor points like horse armor of the same material, and it does not wear down.
Copper, iron, gold and diamond nautilus armor are found in buried treasure, shipwreck and ocean ruin chests; none has a recipe. Diamond armor can then be upgraded to netherite on a Smithing Table.
How to craft
This item has no crafting recipe.
How Iron Nautilus Armor connects
9 links · from the 26.3 game dataUsed with
Worn byNautilus 
Worn byZombie Nautilus Where to get it
Loot in structureschance per item drawn
Tutorials with Iron Nautilus Armor (1)
Used to craft (1)
Iron Nautilus Armor · FAQ
How do you get Iron Nautilus Armor in Minecraft?
It can be found as loot in Buried Treasure, Shipwreck and Ocean Ruins.
What is Iron Nautilus Armor used for in Minecraft?
It protects a ridden nautilus in underwater fights. It is an ingredient in one recipe: Iron Nugget. Worn by: Nautilus and Zombie Nautilus.
Does Iron Nautilus Armor stack?
No: only one per inventory slot.