creature identfication

We found this creature type thing on the underside of our Kenya tree. It was hanging out unseen for a while we think since the coral is on a larger rock for a base. We saw it out and on the base of the Kenya shortly before it slowly shriveled up to a small frag. No type of research has given us...

Hello everyone, I was wondering if anyone could tell me what this is. I’ve never seen anything like it in any of my systems before. It’s mostly transparent and is stuck to the glass. It appears to have tentacles that it uses to feed from the water column. It’s very small, maybe the size of a...