Noticed this one today. My rocks are from gulfliverock.com. At the moment I see only of these. I can easily remove this one as it is growing on the substrate.
I am trying to get a positive id. It has a blue mouth with red/blue around it. The tentacles are clear with red stripes on them.
I am trying to get a positive id. It has a blue mouth with red/blue around it. The tentacles are clear with red stripes on them.

