So the Brain trust concurs. I think so too on it being a type of sponge. I was thinking some type of benign organism, hard algae maybe but sponge makes more sense. It's "spongy" at its base. As I said, taking a long time to grow and funny it's only on the one rock...
Aquiriumlover10, I can't believe you can't see the eel! LOL!
Thanks everyone for the input.
Life is tough, it's even tougher if your stupid.
If your not angry, your not paying attention...
150G FWLR (Morays) 75G Fresh (Assrtd) 24G Cube (Reef/Goby) 10G Fresh (Beta)