Hi everyone,
This is my 1st R2R post, I hope somebody can help me identify what this thing is attached to the live rock in the photo that I attached. I originally thought it was some kind of egg as I have barnacles that appeared in this tank out of nowhere. Today I noticed that is egg looking thing was open and I shined a light on it to inspect it. As soon as the light hit this creature the shell shut very quickly. Any ideas what this could be? Thanks!
This is my 1st R2R post, I hope somebody can help me identify what this thing is attached to the live rock in the photo that I attached. I originally thought it was some kind of egg as I have barnacles that appeared in this tank out of nowhere. Today I noticed that is egg looking thing was open and I shined a light on it to inspect it. As soon as the light hit this creature the shell shut very quickly. Any ideas what this could be? Thanks!