Have a few pictures here requiring some ID expertise!
1.
In this picture the 1st arrow is pointing at something that has just started growing over the past day... no idea what it is.. the picture is not the best, but it seems to be some type of flatter looking polyp with a tiny opening pointing outwards.
The second arrow is pointing at what looks to be a corraline algae of some sort, however, I find it odd that it is actually growing outwards (probably has grown about 1/2 cm away from the rock), instead of covering the rock like I have seen most of the corraline algae do. No idea what is occuring, hope you guys have some info.
2.
These might be a bit easier to ID... They started growing from the corraline algae overnight, and have made massive growth just over the course of the day alone... zoanthids possibly? I'm not really sure.