ID Please


New member
I got this piece of rock with some zoas on it a couple months ago and I don't remember seeing these white tubes on the bottom. I saw what looked like aiptasia or it could have been a feather duster maybe coming out of the tube but it retracted before I could get a pic. These tubes are rigid and not soft. I broke a small piece off. What should I do?




poisson voyeur
Mine are usually on the under sides of my rocks and mostly on my sump rocks. The tubes break easily. Search calcareous tubeworm, and encrusting tube worm.