zoa pest

this zoa has been in my tank one week or so and this worm thing started popping out of it today. Any clue what it is? Should I pull it out?

A couple of these bugs came off my zoas after dipping. They are very small, 2-3mm. Mostly translucent. They have 2 thin long antennas on their head. I looked at photos of Zoanthid-eating nudibranchs and those are much thicker than what I found. Are these just amphipods? I do have amphipods in my...

My frag tank is losing zoas fast. Who is the most likely culprit? I have inspected those suffering and those still healthy and see no nudis, eggs, spiders, or pox. My parameters are all good to great. Those that are afflicted go from okay and open to closed completely overnight, and after that...