It is possible..

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That a feather duster can burrow into a starfish leg and live there?

Super weird i know. I have a couple of feather dusters that are normal and live in their tubes. I also have/had a red linkia star fish that I haven't seen in a few months but last night I found one single leg star fish leg not attached to the star with what looks like a tiny feather duster blooming out of the end of the leg! Weirdest thing ever. I will snap a pic as soon as I get home but is this even possible?
Did this baby duster make this foreign leg his tube?