I have been having great success with NPS animals as of late. I'm actually enjoying this little challenge. One of the things I've noticed recently is the growth pattern of some of my tubastrea (sun coral). I've been telling people for years that each and every polyp has to be fed because each cup is a solitary animal. However, I've noticed that their tissue tends to grow together....almost like a coenenchyme. If that's the case, then one polyp can share nutrients with another. So what's the deal? Can they share nutrients or not?