I think it's causing the white spots on the polyps. Can someone help I.D this critter and tell me the best way to get rid of it. It'll will be greatly appreciated.
In your second post, the critters in photo #1 look spot-on for munnid isopods. They're harmless, handy-dandy little cleaner-uppers, and popular snacks for wrasses and mandarin dragonets.
Agree with pods. Doesnt look like they're harming the zoas. They're likely closed up because the pods like to climb all over everything. But the ones that are open aren't missing their lashes or anything so you should be ok