Name Zoanthid Munchers please

[jasper24]

I have been fighting Zoanthid deaths lately. I took all of my Zoas out and dipped them in Lugols about 2 weeks ago. Nothing but pods fell off. Today I noticed my Eagle Eyes closed up so I took them out and dipped them. I did find a small snail that looks like a Sundial snail. Are these Zoa predators?

 

[gflat65]

Sundials are zoa predators, for sure. Got a pic?

 

[jasper24]

No pic. It was only the size of a BB. Can something that small eat a couple of polyps in a day or so?