NoAi nautili suffocate out of water unlike other aquatic mobs

Unlike other aquatic mobs (like squids or dolphins) a nautilus with the NBT {NoAi:1} will not suffocate out of water

If you want to verify you can simply use

1. /summon minecraft:nautilus ~ ~ ~ {NoAi:1}

2. /tick rate 100 (to speed up the process)