I had both of these come in on a new piece of live rock. I was hoping someone could tell me what type they are. The first one has nearly doubled in size in the 2 weeks I've had him.
After 2 weeks
The last one is a little fuzzy. I think it's a sea urchin, but I'm not sure. He is red in the center and looks like he has little polyps on his body.
Thanks so much