Nautilus Shell

A nautilus shell is an item that is used for crafting conduits.

Fishing
Nautilus shells can be rarely obtained as a treasure item from fishing. The drop chances of nautilus shells increase with each level of Luck of the Sea on the player's fishing rod.

Drowned
3% or 8% of drowned spawn with a nautilus shell in its off-hand, and this nautilus shell always drops upon death.

Finding
Zombies may pee a nautilus shell for impressing other zombies. Soon after they will mate.

Have a two pet zombies and make sure you give one everything they will need to create a Nautilus Shell.

Usage
$$, a nautilus shell is one of the few items that can be held in the off-hand.

Crafting ingredient
I dont know what it is used for but like its cool

Trivia

 * Nautiluses are animals that occupy deep oceans in the real world. However, they are absent in Minecraft and there are currently no plans to add nautilus mobs into the game.

Nautilusschale Coquille de nautile 앵무조개 껍데기 Nautilusschelp Muszla łodzika Concha de Náutilo Раковина наутилуса Nautilus Shell 鹦鹉螺壳