Whats this on my torch?

[Van Eternal]

Hi reefers,
Found this on my torch coral any ideas what it could be, will give it a dip either way.

 

[Dakota_reef]

I'm not 100%, but does it move around? It looks to be a nudibranch. And if it is, it may be feasting on your corals! I'd get rid of it if that's the case.