Snail or new growth?

[FLD2]

Just picked this up today and noticed something I didn’t see at the store. Any idea what the arrow it pointing to? (@gulf coast reefer )

 

[Gtinnel]

It’s a vermetid snail

 

[MERKEY]

Looks like a vermatid snail to me.

 

[MoshJosh]

Mostly harmless (some say their mucus can irritate corals) but unsightly, especially when producing the aforementioned mucus.

I find the best way to “remove” them is to crush with metal tweezers. . . but be sure to get the whole “body” as crushing just the tube won’t kill them and they will rebuild it.