Nautilus Armor

Nautilus armor is a type of armor that can be equipped on a tamed adult nautilus or zombie nautilus to reduce the damage it receives. There are five tiers of nautilus armor; netherite armor can only be smithed, and the rest must be found from generated loot.

In Bedrock Edition, due to a bug, zombies, as well as husks, zombie villagers, and drowned can also pick up and equip nautilus armor.[1]

Like horse armor, nautilus armor does not have durability.