What Are Nautilus Shells Used For? Nautilus Shells are required to craft Conduits. You'll need eight Nautilus Shells and one Heart of the Sea to craft a Conduit. A Conduit, once activated, gives all players within a set radius of 32-96 blocks the “Conduit Power” effect.

How does a nautilus shell work?

The shell of the nautilus is comprised of many individual chambers. Each chamber is individually sealed and contains an amount of gas. This provides the animal with buoyancy. The nautilus can regulate its density by injecting or removing fluid into these chambers through a system of tubes.

What is unique about a nautilus shell?

Of all the cephalopods, nautiluses are the only animal to have a visible shell. The shell is not only beautiful, but it also provides protection. The nautilus can withdraw into the shell and seal it closed with a fleshy trapdoor called a hood. Nautilus shells can reach up to 8–10 inches in diameter.