Florida live rock hitchhiker ID.

[ISpeakForTheSeas]

The worm is gone. I won’t be able to get a picture, but it’s legs or feelers or whatever those things are along both sides lit up a cool purple color under my Kessils.

The things on the side on chaetae (the bristles of a bristle worm; for anyone wondering, yes, Eunicid worms - bobbits included - are bristle worms, as they are from the taxonomic class Polychaeta).