Sara,
In the second photo of your blue one stretching out...I noticed something I've seen in my tank but I don't know what its called or what it does. Just to the right of the bottom of the blue one there's a mound of sand that has little orange tentacles outstretched. I've seen these in my tank and I guess they are some kind of worm. What is it? Is it safe? Thanks.
Hey, sorry I didn't see your post. That's a spaghetti worm and it's safe. Some people complain they bother zoas, but I don't mind them. That one really likes collecting stuff from the top of the sand.