White Nudibranch still eating Colt Coral?

The Nudibranch has moved and I found it at the rock depression by the Colt! I couldn't remove the Nudibranch but I was able to move the Colt to another location - it looks very bad. I found some "things" on the back wall of the tank (mostly behind rock) that appeared to be eggs, see http://www.seahorse-nw.com/Predators.html.