Hi all! This little whatever started poking out of an empty shell (what background pics). Maybe about an inch or 1-1/2" long. I pulled the shell out and there may be a couple of other small ones in there, too (pink background pic). There's more on/in some rock work - pulled one off; missed another one. It doesn't look like a bristle worm to me. What is it and do I need to panic?
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