This is an NPC, or a non-player character.
Ghost Sharks were introduced during Halloween Week 2016. They are a variant of the Ghost. During Halloween Week, all regular Ghosts are replaced with Ghost Sharks which kill upon contact but appear faintly without Spectral Goggles or Synthetic Oculum.
Upon contact, the player will shout out one of the following things:
- CHOMP CHOMP
- GHOST SHARK ATTACK!
- GHOOOOST SHAAAARRRKK!!!
Catching Ghost Sharks will give a normal Ghost-In-A-Jar as usual.