Hitch-hiker id!

[jillyd.713]

I'm just getting the rest of new corals settled, but i noticed this on a rock. I plan to investigate in a bit, but if anyone passing through has insight, it would save me a few minutes!
He's got a white base, brown tentacles

 

[jillyd.713]

When I poke it, it doesnt retract at all, what i could find on aiptasia suggests that if it was, it would retract after being poked...?

 

[jillyd.713]

This snail too!