So as previously mentioned I took over a marine tank from a friend a few weeks ago. As I'm going about normal tank husbandry I've been noticing a lot of cool stuff. One thing in particular, almost out of nowhere there appears to be some sort of small anemone, or at least I think that's what it is.
I've posted a picture below, if you can't tell from the picture it's tendrils are brown color with white ringed tips. I couldn't get a good angle but it has small bright green center. I thought it was perhaps an algae build up, but now think it's more likely a mouth. It's very reactive, the little tendrils stretch out and look like they're feeling around, but if I get too close (like trying to take a picture) he recoils to a small bushy form. Then at night he REALLY shrinks up, I can hardly notice him, he looks like just a bit of rock. Truly fascinating!
I'm still getting acquainted with all my new tank inhabitants, and would appreciate if someone could help identify him so I can do a little more research, thanks!
I've posted a picture below, if you can't tell from the picture it's tendrils are brown color with white ringed tips. I couldn't get a good angle but it has small bright green center. I thought it was perhaps an algae build up, but now think it's more likely a mouth. It's very reactive, the little tendrils stretch out and look like they're feeling around, but if I get too close (like trying to take a picture) he recoils to a small bushy form. Then at night he REALLY shrinks up, I can hardly notice him, he looks like just a bit of rock. Truly fascinating!
I'm still getting acquainted with all my new tank inhabitants, and would appreciate if someone could help identify him so I can do a little more research, thanks!

and the polips can reach far

