Okey dokey. I'm not too sure what they are now, they've got long bodies under the tentacles, changed color to brown, and kind of seem like tiny feather duster worms. Either way, I'm bringing them back. There's now at least six of them and they haven't gotten out of the rock completely yet. Any ideas on getting them out? I also spotted a tiny little transparent thing hiding in the rock. I didn't know if it was good or bad so I attempted to smoosh it, it got away. There was a small green emerald crab on it too, he's "disappered" now. All that stuff on a 3/4 pound rock!