Would zoas move to a different area on their own.

[marioannou]

As the tile of the post thread says, I have some new growth of something that looks like zoas in a couple of spots that are no where near where they are now. One of them also seems to be getting some color. One is on a shaded area and one on a random hermit shell. I also have a large soft coral that tries to propagate all over the tank but those look different. I've attached pictures of both. Let me know what you guys think. The third images is what I don't think it is.

 

[LiveWire]

To me from what i can see in the pictures they look like Tunicates aka sea squirts. We can see what everyone else thinks as well.

 

[vanpire]

Occasionally, I see some of my zoas grow in a different area of the tank where I did not place them. It seems like some polyps could have been rubbed off by fish, snails, urchins, etc and was swept by the current to a different area of the tank. This happens the most to my least favorites zoas though.