Couple more ids please

[JPloman]

There is a white spot and a black spot on this rock, can you guys id them? I am thinking some sort of coral growth or sponge, but I am really not sure at all!

 

[JPloman]

And on this one, I circled the growth in red.

 

[aquanaut]

Dont know. But thats some nice rock.. I also have some blackish spots on mine too

 

[JPloman]

Thanks! I just recently posted my whole tank photos. I think my rock is very pretty. I finally aquascaped.

 

[JPloman]

No ideas?