Is this a coral ?

[DarkReefer]

Hi everyone,

I've noticed this seems to be growing a little off of one of my corals (also some appears to be on my rockwork).
Does anyone know what it is? Is it a coral or something else? Kind of reminds me of a monti cap Looks brownish during the day.

This is another piece that I've noticed growing further down from the other.

 

[James M]

Look like more like coralline algae

 

[reefz]

It looks like red cyano or red sponge, but its hard to tell by the photos

 

[DarkReefer]

How about this photo, hopefully shows it off a little more.