What is that!!!?

[CoralNoobDude]

So I got two extra corals in a recent order. One of the corals I was able to identify (I hope) as a Emerald Cactus (pavona?) The other I'm not sure of at all. The cactus I've place about 1/3 from surface of the tank (mid flow) and the unidentified coral is low and out of flow. Assistance requested: What are these corals? Are they placed in the right spots?

 

[ISFNick]

The one on the sand is most definitely a colony of Zoanthids/Palys that are closed up! Can't wait to see how they look when they're open!

 

[CoralNoobDude]

See I thought (and still think) that but the coral feels hard

 

[CoralNoobDude]

Just trying to get some more insight on this