Netherite Nautilus Armor

Netherite nautilus armor is a rare type of nautilus armor that can be equipped by a nautilus that reduces the damage received to the nautilus. It is obtained by upgrading a diamond nautilus armor using a netherite ingot and netherite upgrade at a smithing table. It is the strongest tier of nautilus armor, having higher armor points and armor toughness than diamond nautilus armor.

Netherite nautilus armor can be equipped on a tamed nautilus by holding the nautilus armor and using the use button on a nautilus. It is also able to be equipped manually by putting it into the nautilus armor slot through mounting the nautilus and using its inventory control, or by sneaking and then using or pressing the "open inventory" button.‌[Bedrock Edition only]

Baby nautiluses are unable to equip nautilus armor as they are not rideable.