What Is This

[rc8t6353]

Hello all. A little background. My zoas haven't been looking too good lately so I started doing some investigating. I found some nudis and have been doing manual removal of them and their eggs. Last night while doing my nightly inspection I saw something completely wrapped around one of the polyps. I know on the left is a nudibranch but what is the other thing?

 

[EeyoreIsMySpiritAnimal]

Zoa eating spider?

 

[bradleym]

Zoanthid eating spiders, I think. What a headache...

 

[rc8t6353]

Thanks for the quick responses. I've been reefing for almost 10 years and have never seen them before. Creeped me out tbh lol.