It seems to be! I just was expecting there to be a lot more then one in this.Looks to me like you just discovered a zoa spider egg. Wow, that's interesting. How small is it and how did you find it?
It is about the size of a small bb.
I noticed the polyp looked dead (discolored and closed) and also it lost its rubbery, responsive texture. When I touched it with the tweezers the polyp was soft. I noticed a small hole in the side and could make out this dark ball, so I pulled it out.