Sorry the pic isn't better. I've just got a regular canon point and click and for whatever reason it never seems to know what I'm actually wanting a picture of, lol, I'm sure it's user error. Anyway this is right at the base of a rock where it meets the substrate. I've seen little tentacles sticking up out of the crushed coral and sand substrate, usually a yellow/orange color with a black ring at intervals down the length, they remind me of a graduated stick you could measure depth with. Tonight I noticed quite a few sticking out from under this rock and got the flashlight so I could see better. There are tons coming out of one spot and when I look up in there it looks like there are smaller tentacles at work also. What do you guys think? I'll keep messing with the camera and see if I can get a better pic.