ID please

dani

Member
have tried to get photos, but am unsuccessful
hitchhiker that seems to be living "inside" a rock that I got with mushrooms..
White tentacles/legs come from crevices in the rock in about 3-5 different areas. Some areas have 3 or more of these "tentacles." They are all white with small black bands and "hairy" looking edges.
I've been watching them for the past week, when I initially noticed them. I got the rock over a month ago. To me, they look like a baby brittle star type thing, but the color and fact that they are in the rock is throwing me off. A type of worm maybe?
 
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