Identify Coral? Is it sick?

[drewtah]

Hi Reefers.
I got an assourtment of coral from live aquaria just last week and I put them in my nano tank. I was hoping people can help me identify all the coral.
I'm also concerned out the leathery coral that over the last week has shrunk a bit and produced white spines. Is this ok? Thanks.

 

[Lev F.]

The white spines you see are actually polyps. This means that the coral is doing well and is happy. The leathery one your talking about is cabbage leather coral, Sinularia dura.

 

[drewtah]

So the cabbage leather coral has polps on it? Can you explain the spines on the leather coral

 

[Blown 346]

The spines are polyps.

 

[drewtah]

I'm a super newbie. These polyps are just growths of the leather coral, right?

 

[dallascwbyz]

The polyps are what corals use to catch food out of the water column