Wow Kevin, those are amazing pictures. What are you using to take your pictures. They are truly beautiful!
They look a little more like the tube worm picture. The bottom of the stalk appears to be brown. Although I didn't see the many color bands that appear in your pictures. (also very frustrated that I can't find my magnifying glass!). Do I have anything to worry about if they are tube worms? Do they need any extra care?
Marlin: Okay, a mollusk walks up to this sea cucumber, well he doesn't actually walk, he's just there, and he turns to the sea cucumber, and... Well, wait, there's a mollusk and a sea cucumber and...
Chum: You know for a clown fish, he's not that funny.