I'll see if I can find my pictures.. I've been in love with nps since day one of my saltwater life... had some hidden cup corals hitchhike in on my live rock..and boy they took a beating when I was first learning..
I've got tons of pics of them.. and video of them doing some weird things.. started off as 3 polyps.. now close to 30.. and some starting in new locations..
I have 2 species of cup coral (I think) one is bigger and clear.. others are small and a reddish brown color.. those ones were just a skeleton of a coral for over a year.. and one day.. a polyp formed.. both are thriving in my tank
Anyway they are my fav coral in my tank still and now I'm thinking about setting up a nano nps tank..
A few random pics I could find I'll get some new pics tomorrow