What are these?

[EliWhitney314]

I can't tell if this is macro algea or a plant

I know this is coral but I'm not sure what kind it is/ was.

 

[Bifferwine]

That's a macroalgae. Don't know what kind though.

 

[yote]

Dont hold me to this,but it kinda looks like feather caulerpa to me:dunno:

 

[XxKnuckleheadxX]

i would say prolly feather caulerpa too, and the white spot looks like sponge to me.

 

[dcantucson]

I don't know! But I'd remove it. :shock:

 

[Jschoon]

i would say prolly feather caulerpa too, and the white spot looks like sponge to me.

+1 knuclehead

I would pull out the algae and leave the sponge. It should not be a problem.