Nautilus

The Nautilus is a passive mob added by Upgrade Aquatic. They are found in underwater caves and ravines, but cannot be found in cold or frozen oceans. Nautilus buckets can be purchased from the Wandering Trader.

Behavior
Nautiluses bob up and down and dash randomly, leaving a bubble trail when they do. When approached by a player, Drowned, or Squid, or if they are hit they will perform a few dashes to escape. Additionally, Nautiluses are immune to bubble columns and are unaffected by their pull. Nautiluses released from a Bucket will not despawn.

Drops
The Nautilus always drops one Nautilus Shell and can be captured in a Bucket.

Variations
Secret textures for the nautilus can be acquired by naming it certain things, which include: Note that these name doesn't have to be capitalized.
 * Bagel, Shyguy or Legobagel
 * Cameron, Cam or Cringe
 * Neon Membrane, Cell Membrane or Cell
 * Five or Epic
 * Abnormal, Abnautilus, Abnortilus or MCA
 * Sadcat
 * Smelly or TheFaceOfGaming
 * Snake, Snautilus, Snakeblock or Snake Block
 * TB