Nautilus

Note: Make sure to name your nautlius with a nametag. They will despawn otherwise.

Nautilus (meaning 'Sailor') is a prehistoric creature that was included in the original Fossils and Archeology mod. It is a living fossil that spawns naturally in the world but can also be created by the player. The only other naturally spawning creature is the coelacanth. It is approximately one block tall and long. Upon death, they can drop empty shells and magic conches. Right-clicking a nautilus puts it into your inventory as an item.You can cook live nautilus in a furnace to whip up Sio-Chiu-Le, a Taiwanese snack.

BEHAVIOR
The nautilus is an aquatic mob that spawns naturally in the world. They spawn in shallow waters most often and rarely in deep waters. They will not defend themselves when hurt and are vulnerable to mosasaurus, liopleurodon, and plesiosaurs. They can only live in water, and when placed on land they will suffocate and die.

Like some other non-dinosaurian mobs, they cannot be tamed, ordered, fed, bred, or aged. They also do not make sounds.