can someone id this?

[zoeyo5]

i found this guy sitting on a chalice does anyone know what it is if good or bad?
the second pic has a nickle in it for size comparison.

 

[Breakin Newz]

I would say bad, looks like a "rock" crab.. One that lives in holes on LPS and keeps the flesh from healing because of the irritation...

 

[secretreefer]

+1 yeah hate those guys

 

[zoeyo5]

thanks, guess its good i got it out. there is a hole in the chalice were i got him from looks like it used to be an eye.