In addition to what some have said about non-photosynethic species keep in mind that the chili coral will require high flow and the carnation coral is more of an advanced coral in my opinion.
oops...
Don't know how that happened, (closing the thread) my bad. .. sorry bout that!
as far as polyps go...these are cool because they are bright...I like anything that POPS OUT!
http://www.marinecenter.com/corals/coralslargepolypstonycorals/sunpolypcoralorange/
this is cool but it says it MUST be on the sand
http://www.marinecenter.com/corals/coralslargepolypstonycorals/platecoralmetallicgreen/
I also saw someone on this forum with SUPER blue mushrooms and they were the only mushrooms I ever saw that I was like wow those are cool. I don't know whose tank they were in though. = /